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Know your inhabitants. Start with their needs.
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Freshwater · fish

Know your inhabitants. Start with their needs.

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Bigspot otocinclus — Otocinclus macrospilus
Photo: Rainer Schmitt, 2004 · Source · CC BY-SA 3.0Resized and compressed; no cropping or colour changes.
Freshwater · fish

Bigspot otocinclus

Otocinclus macrospilus

Otocinclus macrospilus is a small suckermouth catfish that grazes leaves, wood and aquarium glass.

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Black neon tetra — Hyphessobrycon herbertaxelrodi
Photo: Luki86 · Source · CC BY-SA 4.0Resized and compressed; no cropping or colour changes.
Freshwater · fish

Black neon tetra

Hyphessobrycon herbertaxelrodi

The black neon tetra, Hyphessobrycon herbertaxelrodi, shows that a striking shoaling fish does not need a bright red belly.

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Boeseman's rainbowfish — Melanotaenia boesemani
Photo: H. Zell · Source · CC BY-SA 3.0Resized and compressed; no cropping or colour changes.
Freshwater · fish

Boeseman's rainbowfish

Melanotaenia boesemani

Boeseman's rainbowfish, Melanotaenia boesemani, is striking as an adult male because of its transition from blue at the front to warm orange behind.

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Bronze cory — Osteogaster aenea
Photo: Pharaoh Hound · Source · CC BY 2.5Resized and compressed; no cropping or colour changes.
Freshwater · fish

Bronze cory

Osteogaster aenea

The bronze cory, Osteogaster aenea, is a familiar aquarium fish with a fascinating social side.

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Cardinal tetra — Paracheirodon axelrodi
Photo: Ltshears · Source · CC BY-SA 3.0Resized and compressed; no cropping or colour changes.
Freshwater · fish

Cardinal tetra

Paracheirodon axelrodi

The cardinal tetra, Paracheirodon axelrodi, is a small shoaling fish with a brilliant blue stripe above an almost continuous red lower body.

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Cherry barb — Rohanella titteya
Photo: Brian Gratwicke · Source · CC BY 2.0Resized and compressed; no cropping or colour changes.
Freshwater · fish

Cherry barb

Rohanella titteya

The cherry barb, Rohanella titteya, is a small Sri Lankan fish whose males can develop a deep red colour.

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Chili rasbora — Boraras brigittae
Photo: Daiju Azuma · Source · CC BY-SA 4.0Resized and compressed; no cropping or colour changes.
Freshwater · fish

Chili rasbora

Boraras brigittae

The chili rasbora, Boraras brigittae, is an exceptionally small fish that brings considerable activity when kept in a quiet group.

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Cockatoo dwarf cichlid — Apistogramma cacatuoides
Photo: Apisto · Source · CC BY-SA 3.0Resized and compressed; no cropping or colour changes.
Freshwater · fish

Cockatoo dwarf cichlid

Apistogramma cacatuoides

The cockatoo dwarf cichlid, Apistogramma cacatuoides, combines an impressive dorsal fin with fascinating territorial behaviour.

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Dwarf gourami — Trichogaster fasciata
Photo: André Karwath aka Aka · Source · CC BY-SA 2.5Resized and compressed; no cropping or colour changes.
Freshwater · fish

Dwarf gourami

Trichogaster fasciata

The dwarf gourami is a brightly coloured labyrinth fish whose slow movements disguise a more complicated temperament.

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Ember tetra — Hyphessobrycon amandae
Photo: Mbdtsmo · Source · CC BY-SA 4.0Resized and compressed; no cropping or colour changes.
Freshwater · fish

Ember tetra

Hyphessobrycon amandae

This tiny tetra does best among plants and quiet tankmates. A mixed shoal does not replace a group of its own species.

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Endler's livebearer — Poecilia wingei
Photo: Dgrummon · Source · CC BY-SA 4.0Resized and compressed; no cropping or colour changes.
Freshwater · fish

Endler's livebearer

Poecilia wingei

Endler's livebearer, Poecilia wingei, is a small fish whose males move through the aquarium displaying striking patches of colour.

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Freshwater angelfish — Pterophyllum scalare
Photo: Versions111 · Source · CC BY 4.0Resized and compressed; no cropping or colour changes.
Freshwater · fish

Freshwater angelfish

Pterophyllum scalare

A large, tall-bodied cichlid for a spacious, tall aquarium. Assess companions against adult size; a juvenile’s peaceful appearance does not establish safety.

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Green swordtail — Xiphophorus hellerii
Photo: Böhm · Source · CC BY 2.5Resized and compressed; no cropping or colour changes.
Freshwater · fish

Green swordtail

Xiphophorus hellerii

The green swordtail, Xiphophorus hellerii, is an active livebearer needing much more space than its small shop size suggests.

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Guppy — Poecilia reticulata
Photo: Federico Cisnetti · Source · CC BY-SA 3.0Resized and compressed; no cropping or colour changes.
Freshwater · fish

Guppy

Poecilia reticulata

The guppy, Poecilia reticulata, is famous for its colourful males and rapid reproduction.

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Harlequin rasbora — Trigonostigma heteromorpha
Photo: Juan R. Lascorz · Source · CC BY-SA 3.0Resized and compressed; no cropping or colour changes.
Freshwater · fish

Harlequin rasbora

Trigonostigma heteromorpha

An active but generally peaceful shoaling fish. Offer varied fine foods and open swimming space between planted margins.

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Honey gourami — Trichogaster chuna
Photo: Antoondommerholt at Dutch Wikipedia · Source · CC BY-SA 3.0Resized and compressed; no cropping or colour changes.
Freshwater · fish

Honey gourami

Trichogaster chuna

The honey gourami, Trichogaster chuna, is a small labyrinth fish distinguished by its quiet exploration and the warm colouring of adult males.

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Kuhli loach — Pangio semicincta
Photo: AverageWalrus · Source · CC BY-SA 4.0Resized and compressed; no cropping or colour changes.
Freshwater · fish

Kuhli loach

Pangio semicincta

The kuhli loach, Pangio semicincta, is a slender striped bottom fish that uses an aquarium very differently from an open-water shoaler.

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Neon tetra (Paracheirodon innesi) with a blue lateral stripe and red rear body in an aquarium
Photo: André Karwath aka Aka · Source · CC BY-SA 2.5Resized and compressed; no cropping or colour changes.
Freshwater · fish

Neon tetra

Paracheirodon innesi

The neon tetra (Paracheirodon innesi) is a small, peaceful freshwater fish from the Amazon basin in Peru, Colombia and Brazil. Its luminous blue stripe and red rear half make it…

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Panda cory — Hoplisoma panda
Photo: Chronotopian · Source · CC BY-SA 3.0Resized and compressed; no cropping or colour changes.
Freshwater · fish

Panda cory

Hoplisoma panda

The panda cory, Hoplisoma panda, combines a striking black eye mask with an inquisitive way of searching for food.

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Pygmy cory — Gastrodermus pygmaeus
Photo: Carnat Joel · Source · CC BY 2.0Resized and compressed; no cropping or colour changes.
Freshwater · fish

Pygmy cory

Gastrodermus pygmaeus

Also known as Corydoras pygmaeus. This small shoaling fish is not a leftover-food cleaner. Provide fine food, a gentle substrate and quiet surroundings.

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Ram cichlid — Mikrogeophagus ramirezi
Photo: Sven Kullander · Source · CC BY-SA 4.0Resized and compressed; no cropping or colour changes.
Freshwater · fish

Ram cichlid

Mikrogeophagus ramirezi

A warm-water dwarf cichlid sensitive to unstable or polluted water. Provide a mature aquarium with quiet, compatible companions and space for the pair.

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Rummy-nose tetra — Petitella bleheri
Photo: -serwacy01- · Source · CC BY-SA 4.0Resized and compressed; no cropping or colour changes.
Freshwater · fish

Rummy-nose tetra

Petitella bleheri

The rummy-nose tetra, Petitella bleheri, is instantly recognisable by its red head, silver body and black-and-white tail.

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Siamese fighting fish — Betta splendens
Photo: ivabalk · Source · CC0Resized and compressed; no cropping or colour changes.
Freshwater · fish

Siamese fighting fish

Betta splendens

A territorial labyrinth fish needing calm surroundings and surface access. Do not house males together. Not an automatic choice for a community aquarium.

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Southern platyfish — Xiphophorus maculatus
Photo: Usien · Source · CC BY-SA 4.0Resized and compressed; no cropping or colour changes.
Freshwater · fish

Southern platyfish

Xiphophorus maculatus

The southern platyfish, Xiphophorus maculatus, is a sturdy small livebearer bred in many colours.

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