Red Shiner
Cyprinella lutrensis
- Adult size
- ≤ 3.5" (≤ 9 cm)
- Aquarium size
- 36 US gal (135 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 50–72°F (10–22°C)
Aquarium Fish Database
Explore freshwater aquarium fish by care level, size, temperament, swimming zone, water parameters, and compatibility.
Red Skirt Betta
Betta falx
- Adult size
- ≤ 1.6" (≤ 4 cm)
- Aquarium size
- 14 US gal (54 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Temp
- 72–79°F (22–26°C)
Red Spotted Goby
Rhinogobius rubromaculatus
- Adult size
- ≤ 2" (≤ 5 cm)
- Aquarium size
- 13 US gal (50 L) or larger / ≥ 27.6" (≥ 70 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 64–75°F (18–24°C)
Red Spotted Splash Tetra
Copella meinkeni
- 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
- 68–82°F (20–28°C)
Red Spotted Splashing Characin
Pyrrhulina obermulleri
- Adult size
- ≤ 2.4" (≤ 6 cm)
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 68–81°F (20–27°C)
Red Tail Hemiodus Tetra
Hemiodus gracilis
- Adult size
- ≤ 5.9" (≤ 15 cm)
- Aquarium size
- 55 US gal (208 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–79°F (22–26°C)
Red Tail Zebra Loach
Schistura vinciguerrae
- Adult size
- ≤ 3.1" (≤ 8 cm)
- Aquarium size
- 32 US gal (120 L) or larger / ≥ 35.4" (≥ 90 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 64–77°F (18–25°C)
Red Tailed Black Shark
Epalzeorhynchos bicolor
- Adult size
- ≤ 6.3" (≤ 16 cm)
- Aquarium size
- 53 US gal (200 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Aggressive
- Zone
- Bottom to middle swimmer
- Temp
- 72–79°F (22–26°C)
Red Whiptail Catfish
Rineloricaria sp.
- Adult size
- ≤ 4.3" (≤ 11 cm)
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 75–84°F (24–29°C)
Red-fin Thresher Plecostomus L116
Aphanotorulus emarginatus
- Adult size
- ≤ 15.7" (≤ 40 cm)
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 77–84°F (25–29°C)
Red-Tailed Squirrel Loach
Aborichthys elongatus
- Adult size
- ≤ 3.9" (≤ 10 cm)
- Aquarium size
- 26 US gal (100 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 70–79°F (21–26°C)
Redbreasted Acara
Laetacara dorsigera
- Adult size
- ≤ 2.4" (≤ 6 cm)
- Aquarium size
- 30 US gal (112 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 68–81°F (20–27°C)
Redfin Congo Tetra
Micralestes occidentalis
- Adult size
- ≤ 3.1" (≤ 8 cm)
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 70–79°F (21–26°C)
Redfin Dwarf Rainbowfish
Melanotaenia maccullochi
- Adult size
- ≤ 2.8" (≤ 7 cm)
- Aquarium size
- 32 US gal (120 L) or larger / ≥ 39.4" (≥ 100 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle swimmer
- Temp
- 68–86°F (20–30°C)
Redfin Penguin Tetra
Thayeria sp.
- Adult size
- ≤ 2.4" (≤ 6 cm)
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–81°F (22–27°C)
Redfin Tiger Loach
Syncrossus berdmorei
- Adult size
- ≤ 9.8" (≤ 25 cm)
- Aquarium size
- 79 US gal (300 L) or larger / ≥ 70.9" (≥ 180 cm) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Bottom dweller
- Temp
- 70–79°F (21–26°C)
Redline Apistogramma
Apistogramma hongsloi
- Adult size
- ≤ 3" (≤ 7.5 cm)
- Aquarium size
- 40 US gal (150 L) or larger / ≥ 39.4" (≥ 100 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 72–82°F (22–28°C)
Redlip Shiner
Hydrophlox chiliticus
- Adult size
- ≤ 2.8" (≤ 7 cm)
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 54–63°F (12–17°C)
Redmouth Pencilfish
Nannostomus nigrotaeniatus
- Adult size
- ≤ 1.6" (≤ 4 cm)
- Temperament
- Peaceful
- Zone
- Middle swimmer
- Temp
- 73–81°F (23–27°C)
Redside Dace
Clinostomus elongatus
- Adult size
- ≤ 4.7" (≤ 12 cm)
- Aquarium size
- 37 US gal (140 L) or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 55–64°F (13–18°C)
Redtail Splitfin Goodeid
Xenotoca doadrioi
- Adult size
- ≤ 2" (≤ 5 cm)
- Aquarium size
- 40 US gal (150 L) or larger
- Temperament
- Semi-Aggressive
- Temp
- 54–77°F (12–25°C)
Redtail Spotted Tetra
Parapristella georgiae
- Adult size
- ≤ 2" (≤ 5 cm)
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 72–79°F (22–26°C)
Reed Tetra
Hyphessobrycon elachys
- 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
- 73–81°F (23–27°C)
Reedfish
Erpetoichthys calabaricus
- Adult size
- ≤ 9.8" (≤ 25 cm)
- Aquarium size
- 79 US gal (300 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 79–86°F (26–30°C)
