BeginnerDenison Barb
Dawkinsia denisonii
- Adult size
- ≤ 4.3" (≤ 11 cm)
- Aquarium size
- 92 US gal (350 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 64–81°F (18–27°C)
Aquarium Fish Database
Explore freshwater aquarium fish by care level, size, temperament, swimming zone, water parameters, and compatibility.
Beginner
Intermediate – AdvancedDesana Corydoras
Corydoras desana
- Adult size
- ≤ 2.6" (≤ 6.5 cm)
- Aquarium size
- 21 US gal (80 L) or larger / ≥ 19.7" (≥ 50 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 72–79°F (22–26°C)
Beginner – IntermediateDesert Rainbowfish
Melanotaenia splendida
- Adult size
- ≤ 3.9" (≤ 10 cm)
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 75–82°F (24–28°C)
Beginner – IntermediateDeze Chinese Sucker
Sinogastromyzon dezeensis
- Adult size
- ≤ 2.2" (≤ 5.5 cm)
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 68–75°F (20–24°C)
BeginnerDiamond Tetra
Moenkhausia pittieri
- Adult size
- ≤ 2.4" (≤ 6 cm)
- Aquarium size
- 18 US gal (70 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 73–81°F (23–27°C)
IntermediateDomino Tetra
Neolebias powelli
- Adult size
- ≤ 1" (≤ 2.5 cm)
- Aquarium size
- 16 US gal (60 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–77°F (22–25°C)
IntermediateDrape Fin Barb
Oreichthys crenuchoides
- Adult size
- ≤ 2" (≤ 5 cm)
- Aquarium size
- 14 US gal (54 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–81°F (22–27°C)
IntermediateDuplicate Corydoras
Corydoras duplicareus
- Adult size
- ≤ 2" (≤ 5 cm)
- Aquarium size
- 21 US gal (80 L) or larger / ≥ 17.7" (≥ 45 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 68–79°F (20–26°C)
Intermediate – AdvancedDusky Millions Fish
Phalloceros caudimaculatus
- Adult size
- ≤ 2.4" (≤ 6 cm)
- Aquarium size
- 16 US gal (60 L) or larger
- Temperament
- Peaceful
- Temp
- 63–72°F (17–22°C)
Beginner – IntermediateDwarf Chain Loach
Ambastaia sidthimunki
- Adult size
- ≤ 2.6" (≤ 6.5 cm)
- Aquarium size
- 20 US gal (75 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 72–81°F (22–27°C)
Beginner – IntermediateDwarf Ctenopoma
Microctenopoma nanum
- Adult size
- ≤ 2.8" (≤ 7 cm)
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 63–73°F (17–23°C)
Intermediate – AdvancedDwarf Ember Barbs
Barboides gracilis
- Adult size
- ≤ 0.7" (≤ 1.8 cm)
- Aquarium size
- 11 US gal (40 L) or larger / ≥ 11.8" (≥ 30 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 72–79°F (22–26°C)
IntermediateDwarf Flag Cichlid
Laetacara curviceps
- Adult size
- ≤ 2.8" (≤ 7 cm)
- Aquarium size
- 30 US gal (114 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Bottom to middle swimmer
- Temp
- 72–79°F (22–26°C)
Beginner – IntermediateDwarf Halfbeak
Dermogenys siamensis
- Adult size
- ≤ 2.8" (≤ 7 cm)
- Aquarium size
- 18 US gal (70 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Top swimmer
- Temp
- 75–82°F (24–28°C)
Beginner – IntermediateDwarf Neon Rainbowfish
Melanotaenia praecox
- Adult size
- ≤ 2.4" (≤ 6 cm)
- Aquarium size
- 20 US gal (75 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle swimmer
- Temp
- 72–79°F (22–26°C)
BeginnerDwarf Pencilfish
Nannostomus marginatus
- Adult size
- ≤ 1.4" (≤ 3.5 cm)
- Aquarium size
- 16 US gal (60 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 73–79°F (23–26°C)
Beginner – IntermediateDwarf Pipefish
Doryichthys deokhatoides
- Adult size
- ≤ 7.3" (≤ 18.5 cm)
- Aquarium size
- 20 US gal (75 L) or larger
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 75–82°F (24–28°C)
Beginner – IntermediateDwarf Pleco
Parotocinclus haroldoi
- Adult size
- ≤ 1.6" (≤ 4 cm)
- Aquarium size
- 16 US gal (60 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 77–84°F (25–29°C)
IntermediateDwarf Pufferfish
Carinotetraodon travancoricus
- Adult size
- ≤ 1.4" (≤ 3.5 cm)
- Aquarium size
- 16 US gal (60 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Aggressive
- Zone
- Middle swimmer
- Temp
- 72–81°F (22–27°C)
IntermediateDwarf Rasbora
Boraras maculatus
- 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
- 73–79°F (23–26°C)
IntermediateDwarf Snakehead
Channa gachua
- Adult size
- ≤ 11" (≤ 28 cm)
- Aquarium size
- 40 US gal (150 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Middle swimmer
- Temp
- 72–82°F (22–28°C)
Beginner – IntermediateDwarf Spotted Danio
Danio nigrofasciatus
- 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
- 73–81°F (23–27°C)
Beginner – IntermediateEastern Mosquitofish
Gambusia holbrooki
- Adult size
- ≤ 3.1" (≤ 8 cm)
- Aquarium size
- 11 US gal (40 L) or larger / ≥ 11.8" (≥ 30 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 59–95°F (15–35°C)
Beginner – IntermediateEggers Killifish
Nothobranchius eggersi
- Adult size
- ≤ 2" (≤ 5 cm)
- Aquarium size
- 11 US gal (41 L) or larger / ≥ 17.7" (≥ 45 cm) minimum length
- Temperament
- Peaceful
- Zone
- Top swimmer
- Temp
- 72–79°F (22–26°C)