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All Species

1,268 species. Search by name, or refine by care needs.

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Nkhomo-benga Peacock Cichlid

Aulonocara baenschi

Care level
Intermediate
Adult size
13 cm
Minimum tank
243 litres
Temperature
25–29 °C

Nocturnal Dwarf Panaque L329

Panaqolus nocturnus

Care level
Intermediate
Adult size
11.2–15 cm
Minimum tank
90 litres
Temperature
24–29 °C

Nyktos Cactus Plecostomus L185

Pseudacanthicus nyktos

Care level
Specialist
Adult size
26.2–35 cm
Minimum tank
500 litres
Temperature
25–30 °C

Ocellated Snakehead

Channa pleurophthalma

Care level
Specialist
Adult size
35 cm
Minimum tank
864 litres
Temperature
22–28 °C

Ocellifer Catfish

Synodontis ocellifer

Care level
Intermediate
Adult size
20 cm
Minimum tank
81 litres
Temperature
23–28 °C

Odessa Barb

Pethia padamya

Care level
Beginner
Adult size
4–4.6 cm
Minimum tank
70 litres
Temperature
16–25 °C

Oligospila Peckoltia L006

Peckoltia oligospila

Care level
Intermediate
Adult size
9–12 cm
Minimum tank
90 litres
Temperature
24–29 °C

Olive Corydoras CW019

Gastrodermus sp. CW019

Care level
Intermediate
Adult size
3.5–5 cm
Minimum tank
60 litres
Temperature
22–27 °C

One-Lined Pencilfish

Nannostomus unifasciatus

Care level
Beginner
Adult size
4 cm
Minimum tank
68 litres
Temperature
23–28 °C

Onespot Squeaker

Synodontis notatus

Care level
Advanced
Adult size
27.5 cm
Minimum tank
108 litres
Temperature
22–25 °C

Orange Cherry Shrimp

Neocaridina davidi

Care level
Beginner
Adult size
3–4 cm
Minimum tank
20 litres
Temperature
18–26 °C

Orange Finned Danio

Danio kyathit

Care level
Intermediate
Adult size
3.5–4.5 cm
Minimum tank
80 litres
Temperature
18–26 °C

Orange Rili Shrimp

Neocaridina davidi

Care level
Beginner
Adult size
3–4 cm
Minimum tank
20 litres
Temperature
18–26 °C

Orange Spotted Snakehead

Channa aurantimaculata

Care level
Specialist
Adult size
40 cm
Minimum tank
540 litres
Temperature
10–28 °C

Orange Striped Catfish

Synodontis flavitaeniatus

Care level
Beginner
Adult size
19.5 cm
Minimum tank
81 litres
Temperature
23–28 °C

Orange Volcano Rili Shrimp

Neocaridina davidi

Care level
Beginner
Adult size
3–4 cm
Minimum tank
20 litres
Temperature
19–26 °C

Orinoco Peacock Bass

Cichla orinocensis

Care level
Specialist
Adult size
45–65 cm
Minimum tank
1800 litres
Temperature
24–30 °C

Ornate Bichir

Polypterus ornatipinnis

Care level
Specialist
Adult size
60 cm
Minimum tank
648 litres
Temperature
25–28 °C

Ornate Borneo Sucker

Gastromyzon ornaticauda

Care level
Specialist
Adult size
4.2–6 cm
Minimum tank
60 litres
Temperature
20–25 °C

Ornate Ctenopoma

Microctenopoma ansorgii

Care level
Intermediate
Adult size
7 cm
Minimum tank
68 litres
Temperature
20–27 °C

Ornate Tetra

Megalamphodus bentosi

Care level
Intermediate
Adult size
4.5 cm
Minimum tank
81 litres
Temperature
20–28 °C

Oscar

Astronotus ocellatus

Care level
Intermediate
Adult size
25–35 cm
Minimum tank
450 litres
Temperature
23–29 °C

Otocinclus Catfish

Otocinclus macrospilus

Care level
Intermediate
Adult size
3–3.5 cm
Minimum tank
40 litres
Temperature
21–26 °C

Over-Halfmoon Betta

Betta splendens var. "Over-Halfmoon"

Care level
Intermediate
Adult size
5–7 cm
Minimum tank
40 litres
Temperature
22–30 °C

Pacific Blue Eye Rainbowfish

Pseudomugil signifer

Care level
Intermediate
Adult size
7 cm
Minimum tank
54 litres
Temperature
20–26 °C