Neetroplus Cichlid, Little (Neetroplus nematopus) — 4-4,5cm

Overview

The Neetroplus Cichlid (Neetroplus nematopus), also known as the Poor Man's Tropheus, is a rare and fascinating Central American cichlid endemic to Nicaragua's volcanic lake systems. Despite its small adult size of just 4.5 cm, this species packs a bold personality and striking grazing behavior. Ideal for aquarists seeking a unique, algae-grazing cichlid with moderate care requirements, Neetroplus nematopus is available for sale UK-wide and thrives in hard, alkaline water similar to Rift Lake conditions.

Appearance and Coloration

Neetroplus nematopus is a compact cichlid with a robust, torpedo-shaped body and a prominent forehead. Coloration varies from olive-brown to grey with iridescent highlights, and breeding individuals display intensified hues of orange, yellow, or blue. The species exhibits a small, slightly underslung mouth adapted for grazing algae and aufwuchs. Males and females are similar in appearance, though males may be slightly larger and more colorful during courtship.

Natural Habitat

Endemic to Lake Xiloá and connected volcanic lake systems in Nicaragua, Neetroplus nematopus inhabits rocky littoral zones with abundant algae growth. These lakes are characterized by hard, alkaline water, stable temperatures, and high clarity. The fish graze biofilm and microorganisms from rock surfaces, a behavior that must be supported in captivity through appropriate diet and tank setup.

Aquarium Setup

A minimum 75-litre aquarium is suitable for a pair or small group of Neetroplus nematopus. Arrange rocks, slate, or limestone to create grazing surfaces and territorial boundaries. Provide multiple caves and crevices to reduce aggression and offer spawning sites. A sandy substrate is ideal, and hardy plants like Anubias or Java Fern can be anchored among rocks, though this species may nibble vegetation. Moderate to strong filtration maintains water clarity and oxygen levels.

Water Parameters

Maintain hard, alkaline water with pH 7.0-8.5 and temperatures between 24-28°C. General hardness (GH) should be 8-15 dGH, and carbonate hardness (KH) 6-12 dKH. Weekly water changes of 25-30% are essential to control nitrate and maintain stable parameters. The species is adaptable but performs best in clean, well-oxygenated water that mimics its natural volcanic lake environment.

Feeding and Diet

Neetroplus nematopus is primarily an algae and aufwuchs grazer. Offer spirulina-based flakes or pellets, algae wafers, and blanched vegetables such as zucchini, spinach, or cucumber. Occasional small meaty foods like brine shrimp, daphnia, or bloodworms can be provided, but the diet should remain vegetable-heavy to prevent digestive issues. Feed small portions 2-3 times daily, ensuring all food is consumed promptly.

Behaviour and Personality

Despite its diminutive size, Neetroplus nematopus is a bold, semi-aggressive cichlid that establishes and defends territories, especially during breeding. This species is constantly active, grazing rocks and interacting with tank mates. Pairs form strong bonds and become more territorial when spawning. While not overly aggressive, they can bully smaller or more timid fish, particularly in undersized tanks with insufficient hiding places.

Tank Mates

Suitable tank mates include other robust Central American cichlids of similar size and temperament, such as small Amatitlania or Cryptoheros species. Large, peaceful to semi-aggressive livebearers and fast, sturdy dither fish can also work. Avoid small fish that can be bullied, slow or long-finned species, very peaceful cichlids, other highly territorial bottom dwellers, and shrimp or small invertebrates, which may be eaten or harassed.

Breeding

Neetroplus nematopus is a substrate spawner that forms monogamous pairs. Breeding pairs become highly territorial and select flat rocks or hard surfaces for egg laying. Both parents guard the eggs and fry, displaying intense protective behavior. Provide excellent water quality, a varied herbivorous diet, and multiple caves to encourage spawning. Fry are small and require infusoria or powdered fry food initially, graduating to baby brine shrimp as they grow.

Why Buy from Tropical Fish Co

Tropical Fish Co is the UK's trusted source for rare and specialty cichlids, including the unique Neetroplus nematopus. Every fish is quarantined, health-checked, and acclimated to UK water conditions before dispatch. We provide expert guidance on tank setup, water chemistry, and compatible tank mates to ensure your cichlids thrive. With fast, secure delivery and a commitment to fish welfare, Tropical Fish Co is your premier destination for exceptional freshwater fish.