Beginner – IntermediateBrittans Rasbora
Kottelatia brittan
- Adult size
- ≤ 2" (≤ 5 cm)
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 73–79°F (23–26°C)
Aquarium Fish Database
Explore freshwater aquarium fish by care level, size, temperament, swimming zone, water parameters, and compatibility.
Beginner – Intermediate
Beginner – IntermediateBroadstripe Shiner
Pteronotropis euryzonus
- Adult size
- ≤ 2.8" (≤ 7 cm)
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 54–63°F (12–17°C)
Beginner – IntermediateBroken Line Tetra
Hemigrammus ulreyi
- Adult size
- ≤ 2" (≤ 5 cm)
- Aquarium size
- 30 US gal (112 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 73–79°F (23–26°C)
Beginner – IntermediateBronze Corydoras Var Longfin
Corydoras aeneus
- Adult size
- ≤ 2.8" (≤ 7 cm)
- Aquarium size
- 16 US gal (60 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 73–79°F (23–26°C)
Beginner – IntermediateBrown Fork Tail Loach
Vaillantella cinnamomea
- Adult size
- ≤ 2" (≤ 5 cm)
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 72–79°F (22–26°C)
Intermediate – AdvancedBrown Ghost Knifefish
Apteronotus leptorhynchus
- Adult size
- ≤ 7.9" (≤ 20 cm)
- Aquarium size
- 119 US gal (450 L) or larger
- Temperament
- Semi-Aggressive
- Zone
- Bottom dweller
- Temp
- 75–82°F (24–28°C)
Intermediate – AdvancedBucktooth Tetra
Exodon paradoxus
- Adult size
- ≤ 4.7" (≤ 12 cm)
- Aquarium size
- 53 US gal (200 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Aggressive
- Zone
- Middle to top swimmer
- Temp
- 72–81°F (22–27°C)
BeginnerBuenos Aires Tetra
Hyphessobrycon anisitsi
- Adult size
- ≤ 2.8" (≤ 7 cm)
- Aquarium size
- 21 US gal (81 L) or larger / ≥ 35.4" (≥ 90 cm) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Middle to top swimmer
- Temp
- 63–82°F (17–28°C)
Intermediate – AdvancedBumblebee Goby
Brachygobius doriae
- Adult size
- ≤ 1.6" (≤ 4 cm)
- Aquarium size
- 5 US gal (20 L) or larger / ≥ 17.7" (≥ 45 cm) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Bottom to middle swimmer
- Temp
- 72–79°F (22–26°C)
Intermediate – AdvancedBumblebee Otocinclus
Rhinotocinclus isabelae
- Adult size
- ≤ 0.8" (≤ 2 cm)
- Aquarium size
- 20 US gal (76 L) or larger
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 72–79°F (22–26°C)
Beginner – IntermediateBurgess Corydoras
Hoplisoma burgessi
- Adult size
- ≤ 2.2" (≤ 5.5 cm)
- Aquarium size
- 30 US gal (112 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 68–82°F (20–28°C)
Intermediate – AdvancedBurmese Spotted Snakehead
Channa ornatipinnis
- Adult size
- ≤ 9.8" (≤ 25 cm)
- Aquarium size
- 106 US gal (400 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Aggressive
- Zone
- Bottom to middle swimmer
- Temp
- 54–77°F (12–25°C)
Intermediate – AdvancedButterfly Barb
Barbus hulstaerti
- Adult size
- ≤ 1.4" (≤ 3.5 cm)
- Aquarium size
- 26 US gal (100 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle swimmer
- Temp
- 61–73°F (16–23°C)
Intermediate – AdvancedButterfly Peacock Bass
Cichla ocellaris
- Adult size
- ≤ 29.5" (≤ 75 cm)
- Aquarium size
- 220 US gal (832 L) or larger / ≥ 96.1" (≥ 244 cm) minimum length
- Temperament
- Aggressive
- Zone
- Middle swimmer
- Temp
- 75–84°F (24–29°C)
Beginner – IntermediateButterfly Plecostomus L168
Dekeyseria brachyura
- Adult size
- ≤ 5.9" (≤ 15 cm)
- Aquarium size
- 66 US gal (250 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 77–81°F (25–27°C)
Beginner – IntermediateButterfly Splitfin Goodeid
Ameca splendens
- Adult size
- ≤ 3.9" (≤ 10 cm)
- Aquarium size
- 66 US gal (250 L) or larger / ≥ 35.4" (≥ 90 cm) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Middle to top swimmer
- Temp
- 59–86°F (15–30°C)
Intermediate – AdvancedCalvus Cichlid
Altolamprologus calvus
- Adult size
- ≤ 5.1" (≤ 13 cm)
- Aquarium size
- 53 US gal (200 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length
- Temperament
- Peaceful
- Temp
- 75–81°F (24–27°C)
Intermediate – AdvancedCardinal Brachyrhaphis
Brachyrhaphis roseni
- Adult size
- ≤ 2.4" (≤ 6 cm)
- Aquarium size
- 30 US gal (112 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Semi-Aggressive
- Temp
- 70–86°F (21–30°C)
IntermediateCardinal Tetra
Paracheirodon axelrodi
- Adult size
- 1.6–2" (4–5 cm)
- Aquarium size
- 20 US gal (75 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 75–82°F (24–28°C)
Beginner – IntermediateCelebes Halfbeak
Nomorhamphus liemi
- Adult size
- ≤ 3.9" (≤ 10 cm)
- Aquarium size
- 40 US gal (150 L) or larger / ≥ 39.4" (≥ 100 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 68–75°F (20–24°C)
Intermediate – AdvancedCelebes Rainbowfish
Marosatherina ladigesi
- Adult size
- ≤ 3.1" (≤ 8 cm)
- Aquarium size
- 32 US gal (120 L) or larger / ≥ 39.4" (≥ 100 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle swimmer
- Temp
- 72–81°F (22–27°C)
Beginner – IntermediateCelebes Ricefish
Oryzias celebensis
- Adult size
- ≤ 2" (≤ 5 cm)
- Aquarium size
- 11 US gal (41 L) or larger / ≥ 17.7" (≥ 45 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle swimmer
- Temp
- 72–86°F (22–30°C)
Beginner – IntermediateCelestial Pearl Danio
Danio margaritatus
- Adult size
- ≤ 1" (≤ 2.5 cm)
- Aquarium size
- 11 US gal (41 L) or larger / ≥ 17.7" (≥ 45 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 68–77°F (20–25°C)
Beginner – IntermediateCenepa Red Pencilfish
Nannstomus sp.
- Adult size
- ≤ 1.4" (≤ 3.5 cm)
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 73–81°F (23–27°C)