Barred Bichir (Polypterus senegalus) - UK

Meet the Barred Bichir, one of the most fascinating tropical fish UK hobbyists can keep if they want a true prehistoric centrepiece. Known to aquarists as Polypterus delhezi, this African oddball is often searched as Polypterus Delhezi, aquarium bichir UK, or simply freshwater bichir UK. It has a long, armour-plated body, bold vertical bars, and a habit of gliding along the bottom like a living fossil. Adult size is usually 25-35 cm, with a lifespan of 10-20 years when kept in stable conditions, so this is a fish for keepers who want a long-term project rather than a short-term novelty.

This species is semi-aggressive, bottom-dwelling, mostly nocturnal, and best suited to an intermediate aquarist. It is a carnivore with a strong feeding response, excellent for keepers looking for a large tropical fish UK specimen that still has a manageable adult footprint compared with giants like ornate bichir or Polypterus Endlicherii. If you are researching polypterus delhezi care guide, polypterus delhezi tank setup, polypterus delhezi water parameters, or how to care for polypterus delhezi, this guide covers everything from tank size and filtration to diet, compatibility, and breeding. See our detailed photos showing the barred pattern, body shape, and the classic prehistoric profile that makes this fish such a standout in tropical fish UK freshwater collections. For buyers searching tropical fish uk for sale, buy live fish online uk, or best place to buy tropical fish online uk, the Barred Bichir offers a rewarding, unusual species with real personality and presence.

Where Do Barred Bichir Come From? Natural Habitat Explained

The Barred Bichir is native to tropical Africa, where it lives in slow rivers, floodplains, swamps, and marshy backwaters. In the wild, polypterus delhezi habitat typically means warm, oxygen-variable water with soft mud, leaf litter, and dense cover. This species is adapted to low-oxygen environments because it has lungs and must regularly rise to the surface to breathe air. That is one reason polypterus delhezi behaviour in the aquarium often includes calm bottom cruising, occasional surface visits, and a preference for shaded areas.

Wild Barred Bichirs are ambush predators. They hunt worms, insect larvae, crustaceans, and small fish, which explains why a captive polypterus delhezi diet should be rich in meaty foods. The natural water is usually soft to moderately hard, with a polypterus delhezi pH level around neutral to slightly acidic in many habitats, though the species adapts well to a stable range. For aquarists researching polypterus delhezi ideal conditions, think warm, calm, dimly lit water with plenty of hiding places and gentle circulation. A well-structured setup also supports polypterus delhezi in planted tank displays, especially when broad-leaved plants and root tangles create a natural look.

In the hobby, the Barred Bichir is popular because it combines unusual looks with hardy behaviour once settled. It is a favourite among keepers searching for rare tropical fish uk, uk tropical fish, and tropical fish for sale uk that are different from standard community species. It is also one of the more accessible freshwater bichir UK options for aquarists who want a prehistoric fish without jumping straight to the largest species. The species is widely kept, and while it is not generally considered threatened in the aquarium trade, responsible sourcing and good husbandry remain essential. If you are building a long-term display, this fish rewards patience, stable water, and a calm environment.

How to Set Up the Perfect Tank for Barred Bichir

Tank Size Requirements

When researching polypterus delhezi tank size or polypterus delhezi minimum tank size, bigger is always better. The minimum for a single adult is 300 litres, but 500 litres is strongly recommended for long-term comfort, especially if you also plan to keep polypterus delhezi tank mates. This fish has a moderate bioload, grows to polypterus delhezi size of 25-35 cm, and needs floor space more than height. A long tank is better than a tall one because it gives the fish room to patrol the bottom and turn easily.

Many customers who buy Polypterus Delhezi for the first time underestimate how much room a mature specimen needs. A juvenile may look compact, but delhezi bichir full grown fish are substantial and can become territorial if cramped. If you are planning a community setup, consider whether the tank can support the fish at adult size for many years. This is one of the most important parts of polypterus delhezi aquarium setup and polypterus delhezi tank setup.

Water Parameters

The ideal polypterus delhezi water temperature is 26°C, with a safe range of 23-28°C. Keep the polypterus delhezi temperature stable, because sudden swings can reduce appetite and increase stress. The best polypterus delhezi water parameters are pH 6.2-7.8 and hardness around 5-20 dGH. If you are searching polypterus delhezi water hardness or polypterus delhezi ph level, the key is consistency rather than chasing a perfect number.

Stable, well-oxygenated water matters more than ultra-soft water. Keep ammonia and nitrite at zero, and nitrate as low as practical through regular maintenance. In UK homes, many aquarists find this species adapts well to tap water once it is dechlorinated and matched to the tank slowly. That is why polypterus delhezi ideal conditions are often easier to achieve than people expect, provided the tank is mature and well filtered.

Filtration and Flow

Polypterus delhezi filtration needs are moderate to strong, but the flow should remain gentle. A canister filter or large external filter is ideal because it provides high biological capacity without blasting the fish with current. This is important because bichirs are not built for fast, turbulent water. A spray bar or lily pipe can help diffuse output, making the tank more comfortable while still maintaining excellent water quality.

Good filtration also helps manage the meaty diet of this species. Because polypterus delhezi feeding guide plans often include frozen foods and pellets, waste can build quickly if the tank is underfiltered. For keepers comparing buy aquarium fish online uk options, it is worth planning the filtration first and the fish second. That approach leads to healthier livestock and fewer long-term problems.

Substrate, Plants, and Decor

Use a soft sand or smooth fine gravel substrate. This species spends a lot of time on the floor, and sharp stones can damage the belly or fins. Dark substrate often makes the barred pattern stand out more strongly, which is one reason many aquarists prefer it for display tanks. Add driftwood, caves, and rockwork with smooth edges, but leave open floor space for movement.

For planting, choose hardy species that can handle low light and occasional disturbance. Java fern, Anubias, Bolbitis, and Amazon sword plants can work well in a polypterus delhezi in planted tank layout if they are anchored securely. Floating plants can also help reduce brightness and create cover. If you are building a mixed aquascape, browse our tropical fish collection for species that match a calm, low-light setup, and consider adding a quality aquarium heater, a canister filter, and a fine sand substrate to complete the system.

Lighting Requirements

Lighting should be moderate to low. Bright light can keep the fish hidden and reduce feeding confidence. A 6-8 hour photoperiod is a good starting point, especially if you are using live plants. Dimmer lighting also helps the barred markings show more clearly and supports natural nocturnal behaviour. This is especially useful if you are trying to create the best tropical fish uk freshwater display for a species that is more active at dusk and night.

What Do Barred Bichir Eat? Complete Feeding Guide

The Barred Bichir is a strict carnivore, so the best polypterus delhezi feeding guide focuses on protein-rich foods. In the wild, it eats insects, worms, crustaceans, and small fish. In captivity, it does best on a varied diet of sinking carnivore pellets, frozen bloodworm, mysis shrimp, krill, earthworms, chopped prawns, and occasional lancefish. A balanced polypterus delhezi diet keeps the fish active, supports growth, and helps maintain good body condition.

Many keepers ask about polypterus delhezi diet and whether it can be trained onto prepared foods. Yes, most individuals adapt well over time. Start with live or frozen meaty foods, then mix in pellets designed for predatory fish. This makes feeding easier and improves water quality. If you are comparing best tropical fish uk options, remember that bichirs are not grazers or algae eaters; they need a proper carnivore diet, not flake food alone.

Staple Foods

Use high-quality sinking carnivore pellets as the everyday base. Supplement with frozen bloodworm, blackworm, mysis shrimp, and chopped earthworm. These foods are easy to digest and closely match the species’ natural feeding style. Juveniles usually eat more frequently than adults, but portion control matters at every stage.

Supplemental Foods and Treats

Offer krill, prawns, mussel, and small pieces of fish as occasional treats. These can be useful for conditioning, especially if you are researching polypterus delhezi breeding or trying to encourage a shy specimen to feed. Rich foods should not be the entire diet, but they are excellent for variety. Many aquarists shopping tropical fish online uk or tropical fish uk online appreciate species that can accept a broad range of frozen foods because it makes long-term care easier.

Feeding Frequency and Portion Control

Adults usually do well on 3-4 feedings per week, while juveniles may need smaller meals every other day. Feed only what the fish can consume in a few minutes. Because bichirs are opportunistic, they will often keep eating if food is available, which can cause bloating and water pollution. This is why polypterus delhezi health depends so heavily on measured feeding and clean water.

Foods to Avoid

Avoid feeder fish, fatty mammal meats, and anything heavily processed. These foods can lead to nutritional imbalance. Also avoid over-reliance on live fish, as it can increase parasite risk and create bad feeding habits. If you are buying from a tropical fish sale uk source, ask whether the fish has already been trained onto frozen or prepared foods, because that makes the transition much easier.

Barred Bichir Appearance: Colors, Patterns & Varieties

The Barred Bichir is named for the dark vertical bands that run across its pale tan to olive body. These markings can become more intense against a dark substrate and subdued lighting, which is why presentation matters in display tanks. Adults typically reach 25-35 cm, though some individuals may appear longer because of their eel-like profile and extended body shape. The head is broad, the eyes are small, and the body is covered in overlapping ganoid scales that give the fish its prehistoric look.

Unlike many fish in the hobby, the Barred Bichir has dorsal finlets instead of a single continuous dorsal fin. These finlets are one of the easiest ways to identify all types of bichir. The species is often compared with the smallest bichir species, but it is noticeably more robust than tiny juveniles suggest. If you are looking at delhezi bichir growth rate, expect steady but not explosive growth when the fish is fed well and kept in warm, clean water.

Sexing can be tricky. In polypterus delhezi male vs female comparisons, males may have a thicker anal fin and a slightly broader head, while females often look fuller-bodied when mature. These differences are subtle, so most aquarists do not sex them confidently until adulthood. There are no common colour morphs like you see in guppies, but the species can vary in contrast and pattern intensity. Our photos show the intense chocolate-brown striping achieved through dark substrate, low glare lighting, and excellent nutrition.

What Fish Can Live With Barred Bichir? Compatibility Guide

The Barred Bichir is semi-aggressive, but it is not a random attacker. Most problems come from size mismatch, competition for food, or tank mates that are too small to be safe. When people ask about polypterus delhezi with other fish, the answer depends on the adult size of the companions and the overall tank layout. Good polypterus delhezi tank mates are robust fish that occupy different areas of the aquarium and will not fit in the bichir’s mouth.

The best bichir for community tank setups is often a smaller species like Polypterus Delhezi rather than a giant ornate bichir, but even then you still need careful planning. Avoid small fish, shrimp, and delicate species. Fast, greedy fish can also create stress by stealing food before the bichir has a chance to eat. For many keepers, the ideal community is a peaceful large-fish tank with plenty of floor space and hiding places.

Ideal Tank Mates

Good companions include large cichlids, large catfish, and other Polypterus species of similar size. A Polypterus Senegalus - Senegal Bichir - can work in a larger system, as can an Albino Senegal if both fish are similar in size and feeding is managed carefully. Larger, calm fish such as a Gold Giant Gourami may also work in spacious tanks. For very large aquariums, some hobbyists keep bichirs with Piaractus Brachypomus - Red-Bellied Pacu - or X Red-Bellied Pacu - Piaractus Brachypomus, but only if the tank is enormous and the stock is matched by size.

Species to Avoid

Avoid Albino Sky Blue Guppy, Red Black Guppy, and other small fish because they will eventually be eaten. Small tetras, livebearer fry, dwarf cichlids, and shrimp are all poor choices. Fast active fish may also outcompete the bichir at feeding time, which is why polypterus delhezi compatible fish should be chosen with care.

Compatibility Matrix

For stocking examples, a 500-litre tank could house one Barred Bichir with a pair of large catfish and one or two similarly sized cichlids. If you are asking how many polypterus delhezi in a tank, the answer is usually one unless the aquarium is very large and the fish are introduced together. This species is often considered among the best bichir species comparison candidates for mixed setups because it is large enough to hold its own, but not so oversized that it instantly dominates every tank.

How to Breed Barred Bichir: Complete Breeding Guide

Breeding the Barred Bichir is difficult, which is why many keepers focus on long-term maintenance rather than reproduction. If you are researching polypterus delhezi breeding, expect to need patience, a large tank, and excellent conditioning. Sexual dimorphism is subtle, so polypterus delhezi male vs female identification is not always straightforward. Males may show a slightly thicker anal fin, while females can appear rounder when full of eggs.

Breeding Setup

A spacious breeding tank of 300 litres or more is ideal, with warm water around 26-28°C, soft to moderate hardness, and stable filtration. Dense cover, floating plants, and spawning mops can help. Condition the pair with a varied meaty diet for several weeks. This is where a strong polypterus delhezi feeding guide really matters, because healthy condition is the trigger for spawning in many bichir species.

Spawning Behaviour

Spawning is usually triggered by seasonal changes, water changes, and rich feeding. The male may court the female with body contact and circling. Eggs are scattered among plants or mops, and adults may eat them if not separated quickly. Because the species is an egg layer, egg protection is essential if you want a successful hatch.

Egg Care and Fry Growth

Eggs should be moved to a separate container or protected nursery area. Hatching time can vary with temperature, but fry are delicate and require tiny live foods at first. As they grow, they can be switched to baby brine shrimp and small frozen foods. The delhezi bichir growth rate is moderate when fry are well fed, but water quality must be excellent.

Common Challenges

Common problems include egg loss, poor fertility, and adults eating the spawn. Many aquarists find that polypterus delhezi for beginners is not the right search term for breeding, because this is an advanced project. If you are buying bichir for sale UK fish with breeding in mind, choose healthy, well-conditioned adults and prepare for a long wait.

Barred Bichir vs Similar Species: Which Should You Choose?

Comparing bichirs helps you choose the right fish for your tank size, experience level, and stocking goals. The Barred Bichir is often chosen over larger species because it offers the classic bichir look without demanding the same footprint as the biggest predators. It is also a strong choice if you want a fish that can work in a large community tank with careful planning.

Choose the Barred Bichir if you want a striking, manageable predator that still feels special. Choose a Senegal Bichir if you want one of the smallest bichir options and a slightly easier first experience. Choose an ornate species only if you have the space and long-term commitment for a much larger fish. Many keepers searching polypterus delhezi vs ropefish, polypterus delhezi vs senegal bichir, or polypterus delhezi vs endlicheri bichir find that the Barred Bichir gives the best balance of size, pattern, and practicality.

Common Health Problems in Barred Bichir & How to Prevent Them

A healthy Barred Bichir should have clear eyes, smooth movement, a full body, and a strong feeding response. It should surface regularly for air, rest on the bottom without struggling, and show solid appetite. If the fish is hiding constantly, breathing rapidly, or refusing food, check water quality first. Many polypterus delhezi health issues are caused by stress, poor filtration, or unsuitable tank mates rather than disease alone.

Common polypterus delhezi diseases include bacterial infections, external parasites, and fin damage from rough décor or aggressive tank mates. Poor water quality can also lead to skin irritation and lethargy. Treatment usually starts with improved water changes, isolation if needed, and careful use of fish-safe medication. Always confirm the issue before treating, because bichirs can be sensitive to unnecessary chemicals.

Prevention is straightforward: stable water, low stress, measured feeding, and sensible stocking. If you are buying live polypterus delhezi UK stock or searching polypterus delhezi delivery UK, choose healthy specimens from a seller that quarantines properly. That approach greatly reduces the chance of bringing home parasites or bacterial infections. It also improves the odds of a smooth acclimation in your own aquarium.

Understanding Barred Bichir Behavior in the Aquarium

The Barred Bichir is mostly nocturnal, calm, and deliberate. During the day it often rests under wood or in a cave, then becomes more active at dusk and after lights out. It is not a schooling species, and it is usually kept singly or with carefully chosen companions. In the right setup, it will patrol the bottom, investigate food scent trails, and occasionally rise for air at the surface.

Many keepers enjoy the fish’s “prehistoric” body language. It can glide slowly, make sudden short bursts when feeding, and show subtle changes in posture when it feels secure. Good polypterus delhezi behaviour is encouraged by a calm tank, dim lighting, and hiding places. If you want a more active display, feed in the evening and keep the tank layout open enough for cruising while still offering cover.

Why Buy from Tropical Fish Co?

Our Barred Bichir stock is selected for strong body shape, healthy appetite, and clean barred patterning, so you get a fish that settles well and looks impressive from the start. Each fish is held through a proper quarantine period before sale, and we acclimate livestock carefully to UK water conditions so the transition into your aquarium is smoother. If you are looking to buy polypterus delhezi UK, order polypterus delhezi UK, or find a reliable polypterus delhezi shop UK, the goal should always be healthy, well-prepared livestock rather than impulse buying.

We use tracked delivery, insulated packaging, and heat packs in winter when needed, with professional packing methods designed for live arrival. That matters for a species like this because stress reduction during transit helps preserve appetite and reduces acclimation shock. Every order includes care guidance, and our team can help with polypterus delhezi price UK questions, setup advice, and compatibility planning before you buy. If you are comparing buy tropical fish online uk free delivery, buy tropical fish online uk, tropical fish delivered uk, or tropical fish delivery uk, choose a source that understands the needs of predatory fish and packs them accordingly.

Order your Barred Bichir today with confidence and build a tank around one of the most distinctive tropical fish for sale in the uk. If you have been searching where to buy polypterus delhezi UK, polypterus delhezi for sale UK, polypterus delhezi online UK, or polypterus delhezi delivery UK, this is a strong choice for a long-lived, characterful fish.

Complete Your Setup

Pair your Barred Bichir with a Polypterus Senegalus if you want a second bichir in a large system, or choose a Gold Giant Gourami for a calm, robust companion. For larger predator displays, the Polypterus Endlicherii and Piaractus Brachypomus - Red-Bellied Pacu - are popular comparison species. To support feeding and maintenance, add sinking carnivore pellets and a quality aquarium heater to keep conditions stable year-round.