Fish and critters
All 46 of the fish that swim and critters that walk in the tank available in the aquascaping simulator Aquageorama.
Rice fish (medaka)
A small fish, 3–4 cm long, from Japanese streams and rice paddies. Swims in schools near the surface.
Japanese loach
A slender fish that glides slowly along the bottom, burrowing in sand or resting behind stones.
Kazetoge bitterling
A small bitterling about 5 cm long. A blue line runs along its silver body, and males have red-edged fins. Swims in schools in the midwater.
Rosy bitterling
A deep-bodied bitterling. In breeding season, males flush rose-pink on the belly and fins, with an iridescent sheen.
Golden venus chub
A small fish 4–6 cm long; males shine gold. Lives in schools in ponds and paddies, and glows against bright plants.
Topmouth gudgeon
A slender little fish with a small upturned mouth and a dark line along its side. Hardy and schooling.
Pale chub
A slender river fish. Breeding males turn blue-green and orange and spread a large anal fin.
Dark chub
A river fish with a broad dark stripe along its side and yellowish fins. Swims strongly from midwater to near the surface.
Amur minnow
A brown, finely speckled fish of mountain streams. Prefers cover and swims at an easy pace.
Striped spined loach
A slender loach of sandy bottoms, with a row of dark spots like a stripe along its side. Glides over the sand.
Barcheek goby
A small goby that rests on stones and the bottom, then darts a short way. Its fins carry blue and orange.
Green swordtail
A tropical fish whose males grow a long sword from the lower tail fin. A red line runs along its greenish body.
Neon tetra
A small tetra with a glowing blue line and red belly. Schools in midwater; a planted-tank classic.
Lambchop rasbora
A small, deep-bodied orange rasbora with a black wedge on its side. Swims in schools.
Cardinal tetra
A tetra with a glowing blue line and deep red along its whole underside; more red than the neon tetra. Schools in midwater.
Black neon tetra
A tetra with a broad black band topped by a thin, glowing white line, and a red upper eye. Swims in schools.
Glowlight tetra
A translucent tetra with a glowing orange-red line from snout to tail base, and a red upper eye. Swims in schools.
Rummy-nose tetra
A tetra with a red head and a black-and-white striped tail on a translucent body. Swims in tight, orderly schools.
Chili rasbora
A tiny red rasbora about 2cm long, with a dark stripe along the body and red spots on the fins. Swims in schools.
Panda cory
A small pale catfish with a black band through the eye and a black spot at the tail base. Forages along the bottom in groups with its barbels.
Otocinclus
A small sucker-mouthed catfish with a black stripe from snout to tail. Grazes algae on plants and stones near the bottom.
Betta (multicolor)
A fighting fish with long, flowing fins (halfmoon male): a blue-green body and a red anal fin. Males fight each other, so only one betta of any color can be kept. Swims slowly; its fins droop when it rests.
Betta (crimson)
A betta with a deep crimson body and fins (halfmoon male). Its long fins flow through the water like silk and hang like a curtain when it rests. Only one betta of any color can be kept.
Betta (royal blue)
A betta with a deep blue body and fins (halfmoon male), a navy-gray head and red pelvic fins. Only one betta of any color can be kept.
Betta (platinum white)
A pearly white betta (halfmoon male). Its spread tail looks like a fan of white silk. Only one betta of any color can be kept.
Betta (mustard gas)
A betta with a blue-green body and mustard-yellow fins edged in deep blue (halfmoon male). Only one betta of any color can be kept.
Crimson silk betta
A deep crimson betta bred for extra-long fins (halfmoon male). Its tail keeps the same base but reaches twice as far, flowing like silk and hanging almost to the bottom when it rests. Only one betta of any color can be kept.
Ryukin goldfish (red)
A round, deep body with a long twin tail. Red scales flash gold in the light.
Ryukin goldfish (calico)
A calico ryukin: white with red patches and black specks, even on its sheer white fins.
Tancho goldfish
A white goldfish with a single red cap on its head, prized for its flag-like look.
Guppy (blue grass)
A fancy male guppy with a large fan-shaped tail (blue grass type). Its rear body shimmers blue and its tail has black spots.
Guppy (full red)
A fancy male guppy whose rear body and fins are red-orange (full red). Its head and belly are silvery white.
Guppy (tuxedo)
A fancy male guppy whose rear half is black (tuxedo). The front shimmers silver and green, and the tail is red.
Guppy (yellow cobra)
A fancy male guppy with a yellow body and tail covered in black leopard spots (yellow cobra).
Japanese fire-bellied newt
A red-bellied Japanese newt. It plods along the bottom and now and then swims up to the surface for a breath.
Japanese freshwater crab
A small crab from Japanese mountain streams. It scuttles sideways along the bottom, stopping and starting.
Oriental river prawn
A Japanese river prawn with long clawed arms. It walks slowly over the bottom.
Japanese mystery snail
A large snail from Japanese rice paddies and ponds. It creeps slowly along the bottom and climbs the glass.
Japanese river snail
A slender-shelled snail from clear Japanese streams, food for firefly larvae. It creeps along the bottom and climbs the glass.
Koi (Kohaku)
A koi with red (hi) patches on white. Every fish has its own pattern, even of the same variety.
Koi (Taisho Sanke)
A kohaku with small black (sumi) spots on its back, but none on the head. Every fish has its own pattern.
Koi (Showa Sanshoku)
A black-based koi with red and white. The black wraps around the body and splits the head, and the pectoral fins are black at the base. Every fish has its own pattern.
Koi (Tancho)
A pure white koi with a single round red spot on top of its head. The size and position of the spot differ slightly from fish to fish.
Koi (Asagi)
Indigo scales with white edges form a net on the back, with red on the cheeks, lower flanks and fin bases.
Koi (Yamabuki Ogon)
A koi that shines gold all over (a metallic variety).
Koi (Platinum Ogon)
A koi that shines platinum white all over (a metallic variety).