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Shoal & Stem

Flora & Fauna

673 entries — care guides, placement tips, and notes from the community

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Endler Guppy

Poecilia wingei × Poecilia reticulata

fishfreshwater
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easy

Endler's Livebearer

Poecilia wingei

fishfreshwater

Endler's livebearers are related to guppies but smaller and with more intense, contrasting colouration. Males display striking neon patterns and are constantly active. They breed readily in captivity and make an excellent choice for nano planted tanks.

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medium

Exclamation Point Rasbora

Boraras urophthalmoides

fishfreshwater

Named for the dot-dash pattern on its flanks, the exclamation point rasbora is a tiny, stunning micro-fish suited to nano planted tanks. It is best kept in large groups with other micro fish or shrimp and requires pristine, soft water.

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easy

False Julii Corydoras

Corydoras trilineatus

fishfreshwater

Commonly sold as julii corydoras, C. trilineatus has spots that merge into broken lines along the body. It is extremely popular in the hobby due to its attractive pattern and ease of care. Active during the day and peaceful with all tankmates.

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easy

False Rummy Nose Tetra

Petitella georgiae

fishfreshwater

Nearly identical to the true rummy nose but slightly less demanding. Red nose, silver body, and black-and-white striped tail. Schooling fish that looks spectacular in groups of 12+.

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medium

Fancy Goldfish

Carassius auratus (fancy varieties)

fishfreshwater

Fancy goldfish encompass egg-shaped body varieties including Orandas, Ryukins, Telescopes, and Ranchus. Their rounded bodies and ornate finnage are the result of centuries of selective breeding. They are slower than single-tailed goldfish and should not be mixed with them.

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medium

Firemouth Cichlid

Thorichthys meeki

fishfreshwater

The firemouth cichlid is named for the vivid red-orange colouration on the throat and belly. It is a moderately aggressive Central American cichlid that pairs for breeding and defends territories. A stunning fish when in breeding colour.

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moderate

Flagtail Corydoras

Corydoras robineae

fishfreshwater

The flagtail corydoras is one of the most striking species in the genus, with a spectacular tiger-striped caudal fin that resembles a waving flag. The body is pale with a single dark stripe through the eye. A prized species among corydoras enthusiasts, it prefers soft, acidic blackwater conditions matching its Rio Negro origin.

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easy

Florida Flagfish

Jordanella floridae

fishfreshwater

Stunning killifish native to Florida whose flanks mimic the American flag. Hardy algae-eater that tolerates cool water. Great for subtropical and unheated tanks.

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easy

Flowerhorn Cichlid

Hybrid cichlid

fishfreshwater

Distinctive man-made hybrid cichlid with a prominent nuchal hump (kok). Extremely hardy but highly aggressive — must be kept alone. Develops a strong bond with its keeper.

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intermediate

Forest Betta

Betta pugnax

fishfreshwater

The Penang Betta or Forest Betta is a paternal mouthbrooder from clearwater forest streams in Peninsular Malaysia. It is one of the earliest Betta species to be scientifically described and has been kept by hobbyists for over a century. Males display brown-grey bodies with metallic green scale edging and elongated ventral fins. Less showy than newer cultivars, it is valued by wild betta enthusiasts for its natural behaviour and interesting breeding process.

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easy

Forktail Rainbowfish

Pseudomugil furcatus

fishfreshwater

Beautiful nano rainbowfish with a distinctive forked tail with yellow-and-black markings. Males display intensely to each other. Perfect for planted nano tanks.

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medium

Frontosa Cichlid

Cyphotilapia frontosa

fishfreshwater

The frontosa is a majestic Lake Tanganyika cichlid with a distinctive nuchal hump and striking black-and-white vertical banding. It is a slow-moving predator that is surprisingly peaceful for its size in large colonies. A showpiece fish for large Tanganyika setups.

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medium

Furcata Rainbowfish

Pseudomugil furcatus

fishfreshwater

Furcata rainbowfish are small, jewel-like fish with males sporting vivid yellow fins edged in black. They are highly active swimmers and look spectacular in planted nano tanks with dense vegetation. They need very small foods and calm tankmates.

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easy

Galaxy Koi Betta

Betta splendens 'Galaxy Koi'

fishfreshwater

Galaxy Koi Bettas are among the most visually complex cultivars, displaying a mosaic of multi-coloured patches — white, orange, black, and metallic blue or green — resembling the marbled pattern of koi fish. The galaxy pattern refers to an additional iridescent metallic sheen overlaid on the koi marbling. Each fish is unique; no two Galaxy Koi Bettas look exactly the same.

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easy

Gardneri Killifish

Fundulopanchax gardneri

fishfreshwater

One of the most popular and colourful killifish. Males display vivid blue-green with red spots. Hardy and readily available. Perfect introduction to the killifish hobby.

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hard

German Blue Ram

Mikrogeophagus ramirezi

fishfreshwater

The German blue ram is a strikingly coloured dwarf cichlid demanding pristine water quality and warm, soft, acidic conditions. It forms monogamous pairs and will defend a small territory during breeding. Sensitive to poor water quality and temperature fluctuations, making regular water changes critical.

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intermediate

Giant Betta

Betta splendens 'Giant'

fishfreshwater

The Giant Betta is a selectively bred line of Betta splendens that can reach 12–14 cm in length — roughly twice the size of standard bettas. Despite their size, they require the same care as regular bettas but demand more space and food. The giant gene is recessive and was developed in Thailand through multi-generation line breeding.

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easy

Giant Danio

Devario aequipinnatus

fishfreshwater

The giant danio lives up to its name among danios, reaching up to 10 cm. It is a fast, active schooling fish with vivid blue-yellow horizontal stripes. Peaceful with most community fish but may outcompete slow or small tankmates for food.

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easy

Giant Gourami

Osphronemus goramy

fishfreshwater

The largest labyrinth fish, reaching 24 inches. Despite its size, generally peaceful and even shy. Develops a real personality — will hand-feed and recognise its owner. A long-term commitment.

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medium

Glass Catfish

Kryptopterus vitreolus

fishfreshwater

Completely transparent body reveals the skeleton and internal organs. Must be kept in schools of 6+, otherwise becomes stressed and stops eating. Stunning in a well-planted tank.

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GloFish Barb

Puntigrus tetrazona

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GloFish Betta

Betta splendens

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GloFish Corydoras

Corydoras aeneus

fishfreshwater
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GloFish Danio

Danio rerio

fishfreshwater
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GloFish Shark

Epalzeorhynchos bicolor

fishfreshwater
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GloFish Tetra

Gymnocorymbus ternetzi

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Glowlight Danio

Danio choprai

fishfreshwater
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easy

Glowlight Tetra

Hemigrammus erythrozonus

fishfreshwater

The glowlight tetra has a warm golden-orange iridescent stripe running the full body length, glowing like an ember in a planted tank. It is a peaceful, attractive schooling fish that pairs beautifully with dark substrates and dense planting.

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medium

Gold Angelfish

Pterophyllum scalare

fishfreshwater

A captive-bred variety carrying the gold gene, producing a warm golden-yellow body with reduced or absent black barring. The gold colouration intensifies with good nutrition and water quality. A classic show-tank fish that pairs beautifully with dark substrates.

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Gold Danio

Danio albolineatus

fishfreshwater
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easy

Gold Medaka

Oryzias latipes var.

fishfreshwater

Golden selective line of the Japanese ricefish. Suitable for ponds, outdoor tubs, and nano tanks. Extremely tough and easy to breed. Females carry egg clusters before releasing to plants.

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hard

Gold Nugget Pleco

Baryancistrus xanthellus

fishfreshwater

Gold nugget plecos are stunning loricariids with a dark body covered in bright yellow spots and yellow-tipped fins. They are territorial and require warm, oxygen-rich, fast-flowing water with driftwood. They are algae scrapers that also need protein in their diet.

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Gold Ring Danio

Danio tinwini

fishfreshwater
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easy

Gold Tetra

Hemigrammus rodwayi

fishfreshwater

The gold tetra has a distinctive golden-yellow sheen to the body caused by a parasitic infection the fish experiences in the wild — this actually produces the attractive gold iridescence that hobbyists prize. Tank-bred specimens often lack the intense gold but retain a pleasant iridescence. A peaceful, undemanding schooling fish.

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easy

Golden Pencilfish

Nannostomus beckfordi

fishfreshwater

Hardy, golden-bodied pencilfish with a bold red-and-black lateral stripe. The most adaptable pencilfish — tolerates a wider pH range than most. Great for beginner planted tanks.