UK Aquarium Buying Guides
Deep, keyword-targeted guides answering the exact questions UK aquarists search — every one built around live, in-stock fish.
Most popular guides
Start here — category guides(3)
Tropical Fish
Tropical fish guide for UK beginners — what they are, the easiest species to start with, tank size and water basics. Read, then shop our in-stock range.
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Freshwater Fish
The UK guide to freshwater fish — the main groups, the most popular species, how to choose, and what to start with. Browse live in-stock fish today.
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Tropical Fish Temperature
Most tropical fish want a steady 24–26 °C. Get the ideal range, heater sizing, a by-species table and UK heatwave fixes — then shop our live stock.
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Tetras, rasboras & barbs(10)
Tetra
Which tetra suits your tank? Compare neon, cardinal, ember, lemon and more — schooling, water, tank size, and live tetras in stock. Shop UK tetras today.
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Cardinal Tetra
Read or listen to our UK cardinal tetra guide - school size, neon comparisons, water stability, tank mates, feeding and safe buying tips.
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Ember Tetra
Everything UK aquarists need to buy and keep ember tetras — the nano-tank schooler that actually tolerates UK tap water. Tank size, mates, feeding, and live stock.
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Black Phantom Tetra
Black phantom tetras are larger, bolder, and better behaved than neons or cardinals. Tank size, sexing, red phantom counterpart, and our live UK stock.
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Black Neon Tetra
Black neon tetra care, tank mates and how it differs from the common neon tetra — the hardy schooler that thrives in UK tap water. See live stock.
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Lemon Tetra
Lemon tetras are the hardy yellow schooler that thrives in UK tap water. Tank size, tank mates, feeding and colour tips — plus live stock to buy today.
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Gold Barb
Gold barb care for UK tanks — the hardy golden schooler that shrugs off cool water and hard tap. Tank size, mates, hardiness, and live stock. Shop now.
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Serpae Tetra
Serpae tetra care for UK tanks — why this red tetra nips fins, the group size that stops it, the tank mates to avoid, plus live stock to buy.
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Flame Tetra
Flame tetra care for UK tanks — the red-orange Von Rio schooler that tolerates cooler water, the group size it needs, plus live stock to buy.
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Lambchop Rasbora
Lambchop rasbora (Trigonostigma espei) care for UK keepers — the slim copper cousin of the harlequin. Tank size, water, tank mates. Shop live stock now.
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Guppies, platies & livebearers(9)
Guppy
Read or listen to our UK guppy guide - sex ratios, breeding control, tank mates, hard-water care, delivery and live guppy buying tips.
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Endlers Livebearer
UK guide to Endler's livebearers — Endler vs guppy, the hybrid problem, hard-water care, sexing, breeding and which in-stock strains to buy. Read or listen.
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Molly Fish
UK molly fish guide — short-fin vs sailfin, the colour strains, why hard tap water is ideal, sexing, breeding & in-stock mollies. Read or listen.
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Female Guppy
Read or listen to our UK female guppy guide - all-female tanks, breeding ratios, are they already pregnant, tank mates, hard-water care and buying tips.
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Variatus Platy
Read or listen to our UK variatus platy guide — hardiness, tank size, ratios, fry control, tank mates and cooler-water care. Buy live variatus today.
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Balloon Molly
Honest UK balloon molly guide — what the round body really is, the welfare facts, lifespan, hard-water care & in-stock fish. Read or listen first.
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Mickey Mouse Platy
Read or listen to our UK Mickey Mouse Platy guide — the three-spot tail, tank size, how many to keep, breeding, tank mates and live fish to buy now.
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Guppy Types
Confused by guppy fish types? Our UK guide decodes tail shapes, colour strains and fancy-vs-Endler — then shows the strains we have in stock. Browse now.
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Green Swordtail
Read or listen to our UK green swordtail guide — sword vs no sword, ratios, jumping lids, tank size, strains and live delivery. Shop swordtails in stock.
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Cichlids & angelfish(15)
Oscar
Read or listen to our UK oscar fish guide - real tank size, the colour forms, tank mates, feeding and welfare-first buying advice. See the oscars in stock.
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Angelfish
Read or listen to our UK angelfish guide - tank size, colour strains, adult behaviour, tank mates, breeding pairs and welfare-first buying advice.
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German Blue Ram
German blue ram care made honest — warm 27–30°C, soft stable water, tank size, tank mates and the electric blue & gold rams in stock. Shop now.
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Kribensis
Kribensis care made honest — the perfect first cichlid. Tank size, water, cave breeding, tank mates and the rainbow kribs in stock. Shop now.
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Apistogramma
Compare apistogramma dwarf cichlids - cacatuoides, agassizii, borellii and more - by colour, difficulty and water needs. See every form we stock in the UK.
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Flowerhorn
Honest UK flowerhorn guide - real tank size, why they live alone, the kok, water, feeding and welfare-first buying advice. See flowerhorns in stock.
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Angelfish Types
Compare the freshwater angelfish types - koi, platinum, marble, veil, zebra and altum - by pattern, rarity and price. See every strain we have in stock.
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Firemouth Cichlid
UK firemouth cichlid guide — why it flares that red throat, real tank size, water, honest tank mates and the live Thorichthys meeki we ship. Read it first.
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Electric Blue Ram
Electric blue ram care, honestly — the solid-blue morph of Mikrogeophagus ramirezi, why it's delicate, warm 27–30°C water, and the blue rams in stock. Shop now.
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Apistogramma Cacatuoides
UK guide to the cockatoo dwarf cichlid (Apistogramma cacatuoides) — the beginner's apisto. Harem ratio, hard-water care, the red strains & in-stock fish.
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Jack Dempsey
UK Jack Dempsey cichlid guide — real tank size, temperament, the Electric Blue morph, hard-water care, tank mates and in-stock fish. Read or listen.
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Koi Angelfish
Koi angelfish (Pterophyllum scalare koi) explained - the orange crown, why patterns shift with stress, tank size and tank mates. See ours in stock.
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Apistogramma Agassizii
UK guide to Apistogramma agassizii, the spade-tailed Agassiz's dwarf cichlid: ID vs cockatoo apistos, soft-water care & in-stock strains. Read or listen.
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Angelfish Tank Mates
Which fish live safely with freshwater angelfish - and which to avoid. Honest UK compatibility guide with the calm, in-stock tank mates we ship. Read on.
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Lake Malawi Cichlids
The honest UK guide to Lake Malawi cichlids - mbuna vs peacocks, hard water, aggression and tank size, plus the live fish we stock. Shop the colours.
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Catfish, plecos & algae-eaters(12)
Corydoras
Read or listen to our UK Corydoras guide - smooth substrate, group size, species choice, feeding, tank mates and welfare-first buying tips.
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Bristlenose Pleco
UK bristlenose pleco guide — the dwarf algae-eater that won't outgrow your tank. Size, driftwood, varieties, breeding & in-stock fish. Read or listen.
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Ancistrus Pleco
Read or listen to our bristlenose pleco guide - Ancistrus size, food, wood, caves, colour morphs, tank mates and UK buying tips.
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Pygmy Corydoras
Our UK pygmy corydoras guide — group size, the mid-water habit, nano tank size, sand substrate and shrimp-safe tank mates. Buy live cories today.
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Siamese Algae Eater
The Siamese algae eater is the only fish that eats black beard algae — but most UK shops sell the wrong species. How to buy the real Crossocheilus, care, and tank mates.
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Panda Corydoras
Panda corydoras care made simple — group size, cooler water, sand substrate, tank mates and live UK-bred cory catfish in stock. Read, listen and buy today.
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Clown Pleco
Clown plecos (L-numbers) stay small enough for a 90 L tank but need wood and specific water conditions. L204, L206, L226 compared. The 5 lines in UK stock today.
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Common Pleco
Common plecos hit 30–45 cm and need a 300 L+ tank — most buyers don't realise. Read our honest UK size, tank and care guide before you buy a pleco.
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Bronze Corydoras
UK bronze corydoras guide — shoal size, the smooth-sand rule, the 'cleaner fish' myth busted, hard-water care and in-stock cories. Read or listen.
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Albino Corydoras
UK albino corydoras guide — the pink-eyed bronze cory strain. Shoal size, the eyesight quirk, sand not gravel, and in-stock fish. Read or listen.
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Julii Corydoras
UK julii corydoras guide — the honest truth that nearly all 'julii' sold here are false julii (C. trilineatus). How to tell them apart. Read or listen.
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Chinese Algae Eater
The Chinese algae eater grows to 28 cm, turns aggressive, and stops eating algae as an adult. The honest guide before you buy — plus a better algae crew.
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Betta fish(4)
Female Betta Fish
Read or listen to our UK female betta guide - solo tanks, sorority risks, tank mates, planted setups, feeding and buying advice.
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Betta Fish Temperature
The right betta fish temperature is 25–27 °C — below that they stop feeding, above that their lifespan drops. UK heater sizing, summer-cooling tips, and our live stock.
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Betta Fish Tank Mates
Betta fish tank mates that actually work in the UK — safe corydoras, tetras, shrimp and snails, the fish to avoid, and tank-size minimums. Read now.
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Betta Fish
Buy betta fish in the UK with confidence — tail types, tank size, heater, tank mates and live Betta splendens we ship this week. Read or listen now.
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Shrimp, snails & inverts(5)
Cherry Shrimp
Read or listen to our UK cherry shrimp guide - colour strains, stable water, colony size, tank mates, feeding and safe live-shrimp delivery.
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Amano Shrimp
Amano shrimp (Caridina multidentata) — the algae crew every UK planted tank needs. Why they can't breed in freshwater, what they actually eat, welfare-first delivery.
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Assassin Snail
Assassin snails (Anentome helena) for sale in the UK — the natural way to control pest snails. Care, water parameters, what they eat, breeding, and live stock with tracked UK delivery.
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Vampire Crab
Our UK vampire crab guide - Geosesarma colour forms, the paludarium they actually need, group size, diet and safe live delivery. Shop in stock now.
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Freshwater Shrimp
Which freshwater shrimp suits your UK tank? Neocaridina, Caridina, Amano and wood shrimp compared on difficulty, water and breeding. Buy live, shop now.
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Loaches, rainbows & oddballs(6)
Kuhli Loach
Kuhli loaches (Pangio kuhlii) — the eel-like substrate-burrowers every UK planted tank wants. Social biology, substrate welfare, species ID, and live stock.
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Hillstream Loach
The hillstream loach is the UK's go-to high-flow specialist — sucker-bodied, cool-water, algae-eating. Species ID, tank setup, and the 5 varieties we ship.
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Rainbow Shark
The rainbow shark isn't a shark — it's a territorial cyprinid that bullies its own kind. Honest UK care, tank size, real tank mates. See ours in stock.
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Killifish
Killifish made simple: annual vs non-annual, the types we stock - Aphyosemion, Gardner's, Nothobranchius, lampeyes - plus care. See our live killis.
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Boesemani Rainbowfish
Boesemani rainbowfish (Melanotaenia boesemani) care for UK tanks — tank length, group size, water and tank mates. Shop the live shoal today.
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Neon Rainbowfish
Neon rainbowfish (Melanotaenia praecox) care for UK tanks — group size, the tank length they need, water and tank mates. Shop the live shoal.
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Coldwater & pond(3)
White Cloud Mountain Minnow
White cloud mountain minnow care for UK tanks — the hardy coldwater nano fish that thrives unheated. Tank size, mates and live stock. Shop now.
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Cold Water Fish For Sale
Cold water fish for UK unheated tanks — goldfish, white cloud mountain minnows, rosy barbs, pearl danios, and the 10 species we ship no-heater-needed.
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Comet Goldfish
Honest UK comet goldfish guide — they're coldwater, hit 30 cm+, live 20+ years and need a pond or huge tank, never a bowl. Care, sarasa, in-stock fish.
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