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Advanced species search

Filter by water type, tank size, compatible ranges (temperature, pH, GH, KH, salinity), size, temperament, diet, care level, swimming level, and origin. Results match when your range overlaps the species’ range.

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Species match if their range intersects the range you type.

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1,522 results found.

Ocellatus Gold (Shell Dweller)

Neolamprologus ocellatus
Freshwater Tank ≥ 40 L Temp 24.0–27.0 °C pH 7.80–9.20

Octospawn Coral

Euphyllia yaeyamaensis
Marine Tank ≥ 140 L Temp 24.0–27.0 °C pH 8.00–8.40

Odessa Barb

Pethia padamya
Freshwater Tank ≥ 80 L Temp 20.0–26.0 °C pH 6.00–7.50

Opaline Gourami (Three Spot Gourami)

Trichogaster trichopterus
Freshwater Tank ≥ 150 L Temp 22.0–28.0 °C pH 6.00–8.00

Open Brain Coral

Trachyphyllia geoffroyi
Marine Tank ≥ 120 L Temp 24.0–27.0 °C pH 8.00–8.40

Ophthalmotilapia nasuta

Ophthalmotilapia nasuta
Freshwater Tank ≥ 300 L Temp 24.0–27.0 °C pH 8.20–9.20

Ophthalmotilapia ventralis

Ophthalmotilapia ventralis
Freshwater Tank ≥ 250 L Temp 24.0–27.0 °C pH 8.20–9.20

Oranda Goldfish

Carassius auratus (var. Oranda)
Freshwater Tank ≥ 120 L Temp 18.0–24.0 °C pH 6.00–8.00

Oranda Goldfish

Carassius auratus var.
Freshwater Tank ≥ 160 L Temp 15.0–24.0 °C pH 6.50–7.50

Orange Bee Shrimp

Caridina cf. cantonensis
Freshwater Tank ≥ 20 L Temp 18.0–23.0 °C pH 5.80–6.80

Orange Chromide

Pseudetroplus maculatus
Marine Tank ≥ 90 L Temp 24.0–28.0 °C pH 7.50–8.50

Orange Chromide (Albino)

Pseudetroplus maculatus 'Albino'
Marine Tank ≥ 90 L Temp 24.0–28.0 °C pH 7.50–8.50

Orange Chromide (Wild)

Pseudetroplus maculatus (wild)
Marine Tank ≥ 90 L Temp 24.0–28.0 °C pH 7.50–8.50

Orange Eye Black Tiger Shrimp

Caridina mariae (OE Black Tiger)
Freshwater Tank ≥ 20 L Temp 18.0–23.0 °C pH 6.00–7.20

Orange Eye Blue Tiger Shrimp

Caridina mariae (OE Blue Tiger)
Freshwater Tank ≥ 20 L Temp 18.0–23.0 °C pH 6.20–7.20

Orange Head Geophagus

Geophagus sp. 'Orange Head'
Freshwater Tank ≥ 300 L Temp 24.0–28.0 °C pH 6.00–7.20

Orange Molly

Poecilia sphenops
Freshwater Tank ≥ 75 L Temp 24.0–28.0 °C pH 7.50–8.50

Orange Shrimp

Neocaridina davidi var. Orange
Freshwater Tank ≥ 20 L Temp 18.0–29.0 °C pH 6.50–8.00

Orange Yellow Snakeskin Betta

Betta splendens
Freshwater Tank ≥ 30 L Temp 24.0–30.0 °C pH 6.00–7.50

Orangespotted Filefish

Caribbean Reef (Orangespotted Filefish)
Marine Tank ≥ 180 L Temp 24.0–28.0 °C pH 8.00–8.40

Orchid Dottyback

Pseudochromis fridmani
Marine Tank ≥ 80 L Temp 24.0–28.0 °C pH 8.00–8.40

Orchid Dottyback (CB)

Pseudochromis fridmani (CB)
Marine Tank ≥ 70 L Temp 24.0–27.0 °C pH 8.10–8.40

Orfe (Golden Ide) (pond)

Leuciscus idus
Freshwater Tank ≥ 800 L Temp 4.0–22.0 °C pH 6.50–8.00

Oscar

Astronotus ocellatus
Freshwater Tank ≥ 300 L Temp 23.0–28.0 °C pH 6.00–7.50