BeginnerThreadfin Rainbowfish
Iriatherina werneri
- Adult size
- up to 4 cm
- Aquarium size
- 45 L or larger
- Temperament
- Peaceful
- Zone
- Top swimmer
- Temp
- 21–30 °C
Aquarium Fish Database
Explore freshwater aquarium fish by care level, size, temperament, swimming zone, water parameters, and compatibility.
Beginner
IntermediateThree Beacon Plecostomus L091
Leporacanthicus triactis
- Adult size
- up to 25 cm
- Aquarium size
- 300 L or larger
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 24–27 °C
Beginner – IntermediateThree Line Corydoras
Corydoras trilineatus
- Adult size
- up to 5.5 cm
- Aquarium size
- 60 L or larger
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 22–26 °C
Beginner – IntermediateThree Lined Pencilfish
Nannostomus trifasciatus
- Adult size
- up to 4 cm
- Aquarium size
- 45 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 23–27 °C
Beginner – IntermediateThree Spot Gourami
Trichopodus trichopterus
- Adult size
- up to 15 cm
- Aquarium size
- 160 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 23–30 °C
Beginner – IntermediateThree Spotted Dwarf Rasbora
Boraras micros
- Adult size
- up to 2 cm
- Aquarium size
- 30 L or larger
- Temperament
- Peaceful
- Temp
- 24–28 °C
IntermediateThree Spotted Halfbeak
Hemirhamphodon kuekenthali
- Adult size
- up to 7 cm
- Aquarium size
- 80 L or larger
- Temperament
- Peaceful
- Zone
- Top swimmer
- Temp
- 24–28 °C
IntermediateThree Striped Apistogramma
Apistogramma trifasciata
- Adult size
- up to 5.5 cm
- Aquarium size
- 120 L or larger
- Temperament
- Semi-Aggressive
- Zone
- Bottom to middle swimmer
- Temp
- 20–25 °C
IntermediateThreespot Headstander
Pseudanos trimaculatus
- Adult size
- up to 18 cm
- Aquarium size
- 240 L or larger
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 23–27 °C
Intermediate – AdvancedThreespot Leporinus
Leporinus friderici
- Adult size
- up to 40 cm
- Aquarium size
- 300 L or larger
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 23–26 °C
Beginner – IntermediateTicto Barb
Pethia ticto
- Adult size
- up to 7 cm
- Aquarium size
- 80 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 18–25 °C
BeginnerTiger Barb
Puntigrus tetrazona
- Adult size
- up to 8 cm
- Aquarium size
- 120 L or larger
- Temperament
- Semi-Aggressive
- Zone
- Middle swimmer
- Temp
- 20–26 °C
Beginner – IntermediateTiger Butterfly Loach
Gastromyzon sp.
- Adult size
- up to 5 cm
- Aquarium size
- 45 L or larger
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 24–28 °C
IntermediateTiger Dwarf Goby
Mugilogobius tigrinus
- Adult size
- up to 2.5 cm
- Aquarium size
- 30 L or larger
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 22–28 °C
Beginner – IntermediateTiger Otocinclus
Otocinclus cocama
- Adult size
- up to 5 cm
- Aquarium size
- 45 L or larger
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 21–26 °C
Intermediate – AdvancedTiger Shovelnose Catfish
Pseudoplatystoma fasciatum
- Adult size
- up to 90 cm
- Aquarium size
- 900 L or larger
- Temperament
- Semi-Aggressive
- Zone
- Bottom dweller
- Temp
- 23–27 °C
Beginner – IntermediateTiger Teddy Livebearer
Neoheterandria elegans
- Adult size
- up to 2.5 cm
- Aquarium size
- 30 L or larger
- Temperament
- Peaceful
- Temp
- 24–28 °C
Intermediate – AdvancedTinfoil Barb
Barbonymus schwanenfeldii
- Adult size
- up to 35 cm
- Aquarium size
- 300 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 23–26 °C
IntermediateToba Betta
Betta rubra
- Adult size
- up to 4 cm
- Aquarium size
- 120 L or larger
- Temperament
- Semi-Aggressive
- Zone
- Middle to top swimmer
- Temp
- 21–25 °C
Beginner – IntermediateTolson’s Snakehead Gudgeon
Giuris tolsoni
- Adult size
- up to 10 cm
- Aquarium size
- 120 L or larger
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 24–28 °C
Beginner – IntermediateTonkin Bitterling
Acheilognathus tonkinensis
- Adult size
- up to 12 cm
- Aquarium size
- 120 L or larger
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 18–24 °C
Beginner – IntermediateToucan Tetra
Tucanoichthys tucano
- Adult size
- up to 2 cm
- Aquarium size
- 30 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 20–23 °C
Beginner – IntermediateTowoetii Halfbeak
Nomorhamphus towoetii
- Adult size
- up to 8 cm
- Aquarium size
- 80 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 22–25 °C
Beginner – IntermediateTowuti Black Hi Fin Goby
Glossogobius flavipinnis
- Adult size
- up to 8 cm
- Aquarium size
- 80 L or larger
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 26–30 °C
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