Species reference

53 freshwater species. Each page gives the minimum tank, the adult size and the water it needs, and sorts every other species into compatible, with care, and not compatible.

Right column: minimum tank, then adult size.

Tetras

Black neon tetra Hyphessobrycon herbertaxelrodi19 US gal (72 L)
3.5 cm (1.4 in)
Black skirt tetra Gymnocorymbus ternetzi18 US gal (68 L)
7.5 cm (3 in)
Cardinal tetra Paracheirodon axelrodi14 US gal (54 L)
3.5 cm (1.4 in)
Congo tetra Phenacogrammus interruptus29 US gal (108 L)
8 cm (3.1 in)
Ember tetra Hyphessobrycon amandae11 US gal (41 L)
2 cm (0.8 in)
Glowlight tetra Hemigrammus erythrozonus18 US gal (68 L)
4 cm (1.6 in)
Lemon tetra Hyphessobrycon pulchripinnis19 US gal (72 L)
4 cm (1.6 in)
Neon tetra Paracheirodon innesi14 US gal (54 L)
3 cm (1.2 in)
Rummy-nose tetra Hemigrammus bleheri35 in (90 cm) long
5 cm (2 in)
Serpae tetra Hyphessobrycon eques19 US gal (72 L)
4 cm (1.6 in)

Livebearers

Endler's livebearer Poecilia wingei11 US gal (41 L)
2.5 cm (1 in)
Guppy Poecilia reticulata11 US gal (41 L)
6 cm (2.4 in)
Molly Poecilia sphenops21 US gal (81 L)
8 cm (3.1 in)
Platy Xiphophorus maculatus14 US gal (54 L)
5 cm (2 in)
Swordtail Xiphophorus hellerii29 US gal (108 L)
14 cm (5.5 in)

Danios, rasboras and minnows

Celestial pearl danio Danio margaritatus11 US gal (41 L)
2.1 cm (0.8 in)
Chili rasbora Boraras brigittae11 US gal (41 L)
3.5 cm (1.4 in)
Harlequin rasbora Trigonostigma heteromorpha14 US gal (54 L)
5 cm (2 in)
White cloud mountain minnow Tanichthys albonubes14 US gal (54 L)
4 cm (1.6 in)
Zebra danio Danio rerio21 US gal (81 L)
5 cm (2 in)

Barbs

Cherry barb Puntius titteya14 US gal (54 L)
5 cm (2 in)
Rosy barb Pethia conchonius24 US gal (90 L)
14 cm (5.5 in)
Tiger barb Puntigrus tetrazona19 US gal (72 L)
7 cm (2.8 in)

Catfish and plecos

Bristlenose pleco Ancistrus cf. cirrhosus29 US gal (110 L)
15 cm (6 in)
Bronze corydoras Corydoras aeneus30 US gal (114 L)
7.5 cm (3 in)
Common pleco Pterygoplichthys pardalis75 US gal (284 L)
58 cm (23 in)
Glass catfish Kryptopterus vitreolus21 US gal (81 L)
6.5 cm (2.6 in)
Otocinclus Otocinclus macrospilus11 US gal (41 L)
5 cm (2 in)
Panda corydoras Corydoras panda30 US gal (114 L)
5 cm (2 in)
Peppered corydoras Corydoras paleatus30 US gal (114 L)
7 cm (2.8 in)
Pygmy corydoras Corydoras pygmaeus11 US gal (41 L)
3 cm (1.2 in)

Loaches

Clown loach Chromobotia macracanthus171 US gal (648 L)
40 cm (16 in)
Kuhli loach Pangio kuhlii20 US gal (76 L)
12 cm (4.7 in)
Yoyo loach Botia almorhae64 US gal (243 L)
16 cm (6.3 in)

Bettas and gouramis

Betta Betta splendens11 US gal (41 L)
7 cm (2.8 in)
Dwarf gourami Trichogaster lalius15 US gal (56 L)
9.5 cm (3.7 in)
Honey gourami Trichogaster chuna14 US gal (54 L)
14 cm (5.4 in)
Paradise fish Macropodus opercularis19 US gal (72 L)
8 cm (3.1 in)
Pearl gourami Trichopodus leerii21 US gal (81 L)
12 cm (4.7 in)

Cichlids

Angelfish Pterophyllum scalare55 US gal (208 L)
15 cm (5.9 in)
Cockatoo dwarf cichlid Apistogramma cacatuoides14 US gal (54 L)
7.5 cm (3 in)
Convict cichlid Amatitlania nigrofasciata35 in (90 cm) long
15 cm (5.9 in)
Discus Symphysodon aequifasciatus67 US gal (255 L)
14 cm (5.5 in)
German blue ram Mikrogeophagus ramirezi14 US gal (54 L)
4.2 cm (1.7 in)
Kribensis Pelvicachromis pulcher19 US gal (71 L)
11 cm (4.3 in)
Oscar Astronotus ocellatus143 US gal (540 L)
46 cm (18 in)

Other fish

Boeseman's rainbowfish Melanotaenia boesemani29 US gal (108 L)
11 cm (4.3 in)
Goldfish Carassius auratus20 US gal (76 L)
48 cm (19 in)
Red tail shark Epalzeorhynchos bicolor64 US gal (243 L)
13 cm (5.1 in)
Siamese algae eater Crossocheilus oblongus55 US gal (208 L)
16 cm (6.3 in)

Shrimp

Cherry shrimp Neocaridina davidi10 US gal (38 L)
4 cm (1.6 in)

Snails

Mystery snail Pomacea diffusa5 US gal (19 L)
5 cm (2 in)
Nerite snail Neritina natalensis3 US gal (11 L)
3.8 cm (1.5 in)