BeginnerThreadfin Rainbowfish
Iriatherina werneri
- Adult size
- ≤ 4 cm (≤ 1.6 in)
- Aquarium size
- 54 L or larger / ≥ 60 cm (≥ 23.6 in) minimum length
- 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
- ≤ 25 cm (≤ 9.8 in)
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 24–27 °C
Beginner – IntermediateThree Line Corydoras
Corydoras trilineatus
- Adult size
- ≤ 5.5 cm (≤ 2.2 in)
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 22–26 °C
Beginner – IntermediateThree Lined Pencilfish
Nannostomus trifasciatus
- Adult size
- ≤ 4 cm (≤ 1.6 in)
- Aquarium size
- 60 L or larger / ≥ 75 cm (≥ 29.5 in) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 23–27 °C
Beginner – IntermediateThree Spot Gourami
Trichopodus trichopterus
- Adult size
- ≤ 15 cm (≤ 5.9 in)
- Aquarium size
- 200 L or larger / ≥ 100 cm (≥ 39.4 in) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 23–30 °C
Beginner – IntermediateThree Spotted Dwarf Rasbora
Boraras micros
- Adult size
- ≤ 2 cm (≤ 0.8 in)
- Aquarium size
- 41 L or larger / ≥ 45 cm (≥ 17.7 in) minimum length
- Temperament
- Peaceful
- Temp
- 24–28 °C
IntermediateThree Spotted Halfbeak
Hemirhamphodon kuekenthali
- Adult size
- ≤ 7 cm (≤ 2.8 in)
- Aquarium size
- 112 L or larger / ≥ 80 cm (≥ 31.5 in) minimum length
- Temperament
- Peaceful
- Zone
- Top swimmer
- Temp
- 24–28 °C
IntermediateThree Striped Apistogramma
Apistogramma trifasciata
- Adult size
- ≤ 5.5 cm (≤ 2.2 in)
- Aquarium size
- 100 L or larger
- Temperament
- Semi-Aggressive
- Zone
- Bottom to middle swimmer
- Temp
- 20–25 °C
IntermediateThreespot Headstander
Pseudanos trimaculatus
- Adult size
- ≤ 18 cm (≤ 7.1 in)
- Aquarium size
- 400 L or larger / ≥ 150 cm (≥ 59.1 in) minimum length
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 23–27 °C
Intermediate – AdvancedThreespot Leporinus
Leporinus friderici
- Adult size
- ≤ 40 cm (≤ 15.7 in)
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 23–26 °C
Beginner – IntermediateTicto Barb
Pethia ticto
- Adult size
- ≤ 7 cm (≤ 2.8 in)
- Aquarium size
- 72 L or larger / ≥ 80 cm (≥ 31.5 in) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 18–25 °C
Beginner – IntermediateTiger Barb
Puntigrus tetrazona
- Adult size
- 5–7 cm (2–2.8 in)
- Aquarium size
- 110 L or larger / ≥ 80 cm (≥ 31.5 in) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Middle swimmer
- Temp
- 20–26 °C
Beginner – IntermediateTiger Butterfly Loach
Gastromyzon sp.
- Adult size
- ≤ 5 cm (≤ 2 in)
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 24–28 °C
IntermediateTiger Dwarf Goby
Mugilogobius tigrinus
- Adult size
- ≤ 2.5 cm (≤ 1 in)
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 22–28 °C
Beginner – IntermediateTiger Otocinclus
Otocinclus cocama
- Adult size
- ≤ 5 cm (≤ 2 in)
- Aquarium size
- 41 L or larger / ≥ 45 cm (≥ 17.7 in) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 21–26 °C
Intermediate – AdvancedTiger Shovelnose Catfish
Pseudoplatystoma fasciatum
- Adult size
- ≤ 90 cm (≤ 35.4 in)
- Aquarium size
- 10368 L or larger / ≥ 360 cm (≥ 141.7 in) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Bottom dweller
- Temp
- 23–27 °C
Beginner – IntermediateTiger Teddy Livebearer
Neoheterandria elegans
- Adult size
- ≤ 2.5 cm (≤ 1 in)
- Aquarium size
- 19 L or larger
- Temperament
- Peaceful
- Temp
- 24–28 °C
Intermediate – AdvancedTinfoil Barb
Barbonymus schwanenfeldii
- Adult size
- ≤ 35 cm (≤ 13.8 in)
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 23–26 °C
IntermediateToba Betta
Betta rubra
- Adult size
- ≤ 4 cm (≤ 1.6 in)
- Aquarium size
- 38 L or larger / ≥ 46 cm (≥ 18.1 in) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Middle to top swimmer
- Temp
- 21–25 °C
Beginner – IntermediateTolson’s Snakehead Gudgeon
Giuris tolsoni
- Adult size
- ≤ 10 cm (≤ 3.9 in)
- Aquarium size
- 100 L or larger
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 24–28 °C
Beginner – IntermediateTonkin Bitterling
Acheilognathus tonkinensis
- Adult size
- ≤ 12 cm (≤ 4.7 in)
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 18–24 °C
Beginner – IntermediateToucan Tetra
Tucanoichthys tucano
- Adult size
- ≤ 2 cm (≤ 0.8 in)
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 20–23 °C
Beginner – IntermediateTowoetii Halfbeak
Nomorhamphus towoetii
- Adult size
- ≤ 8 cm (≤ 3.1 in)
- Aquarium size
- 76 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 22–25 °C
Beginner – IntermediateTowuti Black Hi Fin Goby
Glossogobius flavipinnis
- Adult size
- ≤ 8 cm (≤ 3.1 in)
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 26–30 °C