Aquarium Fish Database

Explore freshwater aquarium fish by care level, size, temperament, swimming zone, water parameters, and compatibility.

Intermediate – Advanced

Transvestite Dwarf Cichlid

Nanochromis transvestitus

Adult size
up to 7 cm
Aquarium size
120 L or larger
Temperament
Peaceful
Zone
Middle swimmer
Temp
23–26 °C
Beginner – Intermediate

Tropical Carp Gudgeon

Hypseleotris cyprinoides

Adult size
up to 8 cm
Aquarium size
80 L or larger
Temperament
Peaceful
Zone
Bottom to middle swimmer
Temp
22–28 °C
Beginner – Intermediate

True Flying Fox

Epalzeorhynchos kalopterus

Adult size
up to 15 cm
Aquarium size
160 L or larger
Temperament
Peaceful
Zone
Bottom dweller
Temp
22–26 °C
Intermediate

Turkana Jewel Cichlid

Hemichromis exsul

Adult size
up to 10 cm
Aquarium size
200 L or larger
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
22–27 °C
Intermediate

Two Banded Dwarf Cichlid

Apistogramma psammophila

Adult size
up to 6 cm
Aquarium size
120 L or larger
Temperament
Peaceful
Zone
Bottom to middle swimmer
Temp
23–27 °C
Beginner – Intermediate

Twosaddle Corydoras

Corydoras weitzmani

Adult size
up to 5.5 cm
Aquarium size
60 L or larger
Temperament
Peaceful
Zone
Bottom dweller
Temp
21–25 °C
Beginner – Intermediate

Twostripe Corydoras

Corydoras bifasciatus

Adult size
up to 6 cm
Aquarium size
60 L or larger
Temperament
Peaceful
Zone
Bottom dweller
Temp
22–26 °C
Intermediate – Advanced

Uaru Cichlid

Uaru amphiacanthoides

Adult size
up to 25 cm
Aquarium size
300 L or larger
Temperament
Peaceful
Temp
27–30 °C
Intermediate

Uaupesi Apistogramma

Apistogramma uaupesi

Adult size
up to 6 cm
Aquarium size
120 L or larger
Temperament
Semi-Aggressive
Zone
Bottom to middle swimmer
Temp
22–29 °C
Intermediate

Umbrella Apistogramma

Apistogramma borellii

Adult size
up to 6.5 cm
Aquarium size
120 L or larger
Temperament
Semi-Aggressive
Zone
Bottom to middle swimmer
Temp
20–26 °C
Beginner – Intermediate

Upside Down Catfish

Synodontis nigriventris

Adult size
up to 10 cm
Aquarium size
100 L or larger
Temperament
Peaceful
Zone
Bottom dweller
Temp
23–27 °C
Beginner – Intermediate

Urucu Corydoras

Corydoras urucu

Adult size
up to 3 cm
Aquarium size
60 L or larger
Temperament
Peaceful
Zone
Bottom dweller
Temp
23–27 °C
Beginner – Intermediate

Vampire Otocinclus

Nannoptopoma sternoptychum

Adult size
up to 3.3 cm
Aquarium size
45 L or larger
Temperament
Peaceful
Temp
22–27 °C
Beginner

Variatus Platy

Xiphophorus variatus

Adult size
up to 7 cm
Aquarium size
80 L or larger
Temperament
Peaceful
Zone
Middle swimmer
Temp
20–26 °C
Beginner – Intermediate

Vatani Rohtee

Rohtee ogilbii

Adult size
up to 50 cm
Aquarium size
900 L or larger
Temperament
Peaceful
Zone
Middle swimmer
Temp
22–26 °C
Beginner – Intermediate

Venezuelan Orange Corydoras

Corydoras venezuelanus

Adult size
up to 5.5 cm
Aquarium size
60 L or larger
Temperament
Peaceful
Zone
Bottom dweller
Temp
18–26 °C
Intermediate

Ventralis Featherfin Cichlid

Ophthalmotilapia ventralis

Adult size
up to 15 cm
Aquarium size
200 L or larger
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
23–27 °C
Beginner – Intermediate

Vietnam Golden Line Minnow

Araiocypris batodes

Adult size
up to 3.5 cm
Aquarium size
45 L or larger
Temperament
Peaceful
Zone
Bottom to middle swimmer
Temp
22–26 °C
Beginner

Vietnamese Cardinal Minnow

Tanichthys micagemmae

Adult size
up to 3 cm
Aquarium size
30 L or larger
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
18–23 °C
Beginner – Intermediate

Vogelkop Blue Eye Rainbowfish

Pseudomugil reticulatus

Adult size
up to 3.5 cm
Aquarium size
45 L or larger
Temperament
Peaceful
Zone
Middle swimmer
Temp
22–27 °C
Beginner – Intermediate

Wapoga Rainbowfish

Chilatherina alleni

Adult size
up to 8 cm
Aquarium size
80 L or larger
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
24–30 °C
Beginner – Intermediate

Weather Loach

Misgurnus anguillicaudatus

Adult size
up to 30 cm
Aquarium size
300 L or larger
Temperament
Peaceful
Zone
Bottom dweller
Temp
10–25 °C
Beginner – Intermediate

West Papua Rainbowfish

Melanotaenia fasinensis

Adult size
up to 12 cm
Aquarium size
120 L or larger
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
26–30 °C
Beginner – Intermediate

Western Rainbowfish

Melanotaenia australis

Adult size
up to 12 cm
Aquarium size
120 L or larger
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
22–28 °C
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