Intermediate – AdvancedPeacock Snakehead
Channa pulchra
- Adult size
- ≤ 9.8" (≤ 25 cm)
- Aquarium size
- 79 US gal (300 L) or larger / ≥ 55.1" (≥ 140 cm) minimum length
- Temperament
- Aggressive
- Zone
- Bottom to middle swimmer
- Temp
- 68–77°F (20–25°C)
Aquarium Fish Database
Explore freshwater aquarium fish by care level, size, temperament, swimming zone, water parameters, and compatibility.
Intermediate – Advanced
Intermediate – AdvancedPearl Cichlid
Geophagus brasiliensis
- Adult size
- ≤ 9.8" (≤ 25 cm)
- Aquarium size
- 85 US gal (320 L) or larger / ≥ 59.1" (≥ 150 cm) minimum length
- Temperament
- Semi-Aggressive
- Temp
- 64–82°F (18–28°C)
BeginnerPearl Danio
Danio albolineatus
- Adult size
- ≤ 2.6" (≤ 6.5 cm)
- Aquarium size
- 20 US gal (76 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 59–77°F (15–25°C)
Beginner – IntermediatePearl Gourami
Trichopodus leerii
- Adult size
- ≤ 5.1" (≤ 13 cm)
- Aquarium size
- 53 US gal (200 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–82°F (22–28°C)
Beginner – IntermediatePectoral Fin Spot Ricefish
Oryzias pectoralis
- Adult size
- ≤ 1" (≤ 2.5 cm)
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–82°F (22–28°C)
Beginner – IntermediatePenguin Tetra
Thayeria boehlkei
- Adult size
- ≤ 2.4" (≤ 6 cm)
- Aquarium size
- 18 US gal (70 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–81°F (22–27°C)
Beginner – IntermediatePentazona Barb
Desmopuntius pentazona
- Adult size
- ≤ 3.3" (≤ 8.5 cm)
- Aquarium size
- 21 US gal (80 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 73–82°F (23–28°C)
IntermediatePeppermint Armour Goby
Lentipes armatus
- Adult size
- ≤ 2" (≤ 5 cm)
- Aquarium size
- 26 US gal (100 L) or larger
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 72–79°F (22–26°C)
Beginner – IntermediatePeruvian Tetra
Hyphessobrycon peruvianus
- Adult size
- ≤ 1.6" (≤ 4 cm)
- Aquarium size
- 16 US gal (60 L) or larger / ≥ 15.7" (≥ 40 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle swimmer
- Temp
- 75–79°F (24–26°C)
Beginner – IntermediatePetan Molly
Poecilia kykesis
- Adult size
- ≤ 5.1" (≤ 13 cm)
- Aquarium size
- 21 US gal (80 L) or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 75–82°F (24–28°C)
Intermediate – AdvancedPeter’s Elephant Nose Fish
Gnathonemus petersii
- Adult size
- ≤ 9.1" (≤ 23 cm)
- Aquarium size
- 120 US gal (454 L) or larger / ≥ 59.1" (≥ 150 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 73–82°F (23–28°C)
Beginner – IntermediatePeugeot Tetra
Hyphessobrycon peugeoti
- Adult size
- ≤ 1.6" (≤ 4 cm)
- Aquarium size
- 13 US gal (50 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 73–81°F (23–27°C)
Beginner – IntermediatePhoenix Rasbora
Boraras merah
- Adult size
- ≤ 0.8" (≤ 2 cm)
- Aquarium size
- 16 US gal (60 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 68–81°F (20–27°C)
Beginner – IntermediatePhoenix Tetra
Hemigrammus filamentosus
- Adult size
- ≤ 1.6" (≤ 4 cm)
- Aquarium size
- 26 US gal (100 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle swimmer
- Temp
- 73–77°F (23–25°C)
IntermediatePicta Swamp Guppy
Micropoecilia picta
- Adult size
- ≤ 1.2" (≤ 3 cm)
- Aquarium size
- 13 US gal (50 L) or larger / ≥ 19.7" (≥ 50 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 79–81°F (26–27°C)
IntermediatePictus Catfish
Pimelodus pictus
- Adult size
- ≤ 4.7" (≤ 12 cm)
- Aquarium size
- 53 US gal (200 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 72–79°F (22–26°C)
Beginner – IntermediatePingi Hillstream Loach
Beaufortia pingi
- Adult size
- ≤ 2.8" (≤ 7 cm)
- Aquarium size
- 53 US gal (200 L) or larger / ≥ 39.4" (≥ 100 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 64–75°F (18–24°C)
IntermediatePink Kissing Gourami
Helostoma temminckii
- Adult size
- ≤ 11.8" (≤ 30 cm)
- Aquarium size
- 159 US gal (600 L) or larger / ≥ 70.9" (≥ 180 cm) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Middle to top swimmer
- Temp
- 72–82°F (22–28°C)
Beginner – IntermediatePink Lemon Tetra
Hyphessobrycon itaparicensis
- Adult size
- ≤ 1.6" (≤ 4 cm)
- Aquarium size
- 26 US gal (100 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–81°F (22–27°C)
Intermediate – AdvancedPink-tail Chalceus
Chalceus macrolepidotus
- Adult size
- 9.8–11.8" (25–30 cm)
- Aquarium size
- 159 US gal (600 L) or larger / ≥ 70.9" (≥ 180 cm) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Middle to top swimmer
- Temp
- 73–82°F (23–28°C)
Intermediate – AdvancedPlatinum Alligator Gar
Atractosteus spatula
- Adult size
- ≤ 118.1" (≤ 300 cm)
- Temperament
- Aggressive
- Zone
- Middle to top swimmer
- Temp
- 59–88°F (15–31°C)
Beginner – IntermediatePlatinum Medaka Ricefish
Oryzias latipes
- Adult size
- ≤ 1.6" (≤ 4 cm)
- Aquarium size
- 14 US gal (54 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 64–75°F (18–24°C)
BeginnerPlaty
Xiphophorus maculatus
- Adult size
- ≤ 3" (≤ 7.5 cm)
- Aquarium size
- 16 US gal (60 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 64–77°F (18–25°C)
Beginner – IntermediatePoliaks Killifish
Aphyosemion poliaki
- Adult size
- ≤ 2.4" (≤ 6 cm)
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–79°F (22–26°C)