Intermediate – AdvancedRed Bellied Piranha
Pygocentrus nattereri
- Adult size
- ≤ 13.8" (≤ 35 cm)
- Aquarium size
- 264 US gal (1000 L) or larger / ≥ 78.7" (≥ 200 cm) minimum length
- Temperament
- Aggressive
- Zone
- Middle swimmer
- Temp
- 75–82°F (24–28°C)
Aquarium Fish Database
Explore freshwater aquarium fish by care level, size, temperament, swimming zone, water parameters, and compatibility.
Intermediate – Advanced
Beginner – IntermediateRed Belted Goby
Sicyopus zosterophorus
- Adult size
- ≤ 2" (≤ 5 cm)
- Aquarium size
- 30 US gal (114 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 70–79°F (21–26°C)
IntermediateRed Cheek Krobia
Krobia xinguensis
- Adult size
- ≤ 4.7" (≤ 12 cm)
- Aquarium size
- 48 US gal (180 L) or larger / ≥ 39.4" (≥ 100 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle swimmer
- Temp
- 75–82°F (24–28°C)
Beginner – IntermediateRed Chinned Panchax
Epiplatys dageti
- Adult size
- ≤ 2" (≤ 5 cm)
- Aquarium size
- 8 US gal (30 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 70–79°F (21–26°C)
Intermediate – AdvancedRed Devil Cichlid
Amphilophus labiatus
- Adult size
- ≤ 15" (≤ 38 cm)
- Aquarium size
- 264 US gal (1000 L) or larger / ≥ 59.1" (≥ 150 cm) minimum length
- Temperament
- Aggressive
- Zone
- Bottom to middle swimmer
- Temp
- 73–79°F (23–26°C)
Beginner – IntermediateRed Devil Tetra
Hyphessobrycon piranga
- Adult size
- ≤ 1.4" (≤ 3.5 cm)
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 73–81°F (23–27°C)
Beginner – IntermediateRed Eye Red Line Tetra
Hemigrammus rubrostriatus
- Adult size
- ≤ 2" (≤ 5 cm)
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 75–82°F (24–28°C)
BeginnerRed Eye Tetra
Moenkhausia sanctaefilomenae
- Adult size
- ≤ 2.8" (≤ 7 cm)
- Aquarium size
- 26 US gal (100 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–79°F (22–26°C)
Beginner – IntermediateRed Fin Banded Pencilfish
Nannostomus erythrurus
- Adult size
- ≤ 1.2" (≤ 3 cm)
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–82°F (22–28°C)
Beginner – IntermediateRed Fin Flag Tetra
Hyphessobrycon chiribiquete
- Adult size
- ≤ 2.4" (≤ 6 cm)
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–82°F (22–28°C)
Beginner – IntermediateRed Finned Butterfly Loach
Gastromyzon venustus
- Adult size
- ≤ 2" (≤ 5 cm)
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 75–82°F (24–28°C)
Beginner – IntermediateRed Finned Danio
Danio kyathit
- Adult size
- ≤ 2" (≤ 5 cm)
- Aquarium size
- 21 US gal (81 L) or larger / ≥ 35.4" (≥ 90 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 59–79°F (15–26°C)
IntermediateRed Garra
Garra rufa
- Adult size
- 3.9–5.6" (10–14.1 cm)
- Aquarium size
- 63 US gal (240 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 61–75°F (16–24°C)
IntermediateRed Hook Silver Dollar
Myloplus rubripinnis
- Adult size
- ≤ 15.7" (≤ 40 cm)
- Aquarium size
- 264 US gal (1000 L) or larger / ≥ 78.7" (≥ 200 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 73–81°F (23–27°C)
IntermediateRed Laser Rainbowfish
Melanotaenia rubrovittata
- Adult size
- ≤ 2" (≤ 5 cm)
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 81–84°F (27–29°C)
Beginner – IntermediateRed Laser Tetra
Hemigrammus coeruleus
- Adult size
- ≤ 2.4" (≤ 6 cm)
- Aquarium size
- 53 US gal (200 L) or larger / ≥ 39.4" (≥ 100 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 73–81°F (23–27°C)
Beginner – IntermediateRed Line Rasbora
Trigonopoma pauciperforata
- Adult size
- ≤ 2.4" (≤ 6 cm)
- Aquarium size
- 26 US gal (100 L) or larger / ≥ 39.4" (≥ 100 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 68–79°F (20–26°C)
Beginner – IntermediateRed Line Tetra
Hyphessobrycon amapaensis
- Adult size
- ≤ 1.2" (≤ 3 cm)
- Aquarium size
- 16 US gal (60 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 73–81°F (23–27°C)
IntermediateRed Lined Halfbeak
Hemirhamphodon phaiosoma
- Adult size
- ≤ 2.4" (≤ 6 cm)
- Temperament
- Peaceful
- Zone
- Top swimmer
- Temp
- 75–82°F (24–28°C)
Beginner – IntermediateRed Lipstick Goby
Sicyopus exallisquamulus
- Adult size
- ≤ 2" (≤ 5 cm)
- Aquarium size
- 16 US gal (60 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 72–82°F (22–28°C)
Beginner – IntermediateRed Neon Blue Eye Rainbowfish
Pseudomugil luminatus
- Adult size
- ≤ 1.6" (≤ 4 cm)
- Aquarium size
- 14 US gal (54 L) or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 63–79°F (17–26°C)
Beginner – IntermediateRed Phantom Tetra
Megalamphodus sweglesi
- Adult size
- ≤ 1.6" (≤ 4 cm)
- Aquarium size
- 20 US gal (76 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 68–72°F (20–22°C)
Beginner – IntermediateRed Rainbowfish
Glossolepis incisus
- Adult size
- ≤ 5.9" (≤ 15 cm)
- Aquarium size
- 159 US gal (600 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–81°F (22–27°C)
Beginner – IntermediateRed Robin Gourami
Trichogaster chuna
- Adult size
- ≤ 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
- 72–81°F (22–27°C)