Narayan Barb
Pethia setnai
- Adult size
- ≤ 2.6" (≤ 6.5 cm)
- Aquarium size
- 21 US gal (81 L) or larger / ≥ 35.4" (≥ 90 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle swimmer
- Temp
- 68–79°F (20–26°C)
Aquarium Fish Database
Explore freshwater aquarium fish by care level, size, temperament, swimming zone, water parameters, and compatibility.
Nego Dagua Tetra
Hasemania negodagua
- Adult size
- ≤ 1.4" (≤ 3.5 cm)
- Aquarium size
- 20 US gal (75 L) or larger
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 73–81°F (23–27°C)
Neon Blue Rasbora
Sundadanio axelrodi
- Adult size
- ≤ 0.9" (≤ 2.3 cm)
- Aquarium size
- 11 US gal (40 L) or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 73–79°F (23–26°C)
Neon Borneo Sucker
Gastromyzon lepidogaster
- Adult size
- ≤ 4" (≤ 10.2 cm)
- Aquarium size
- 29 US gal (108 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 64–75°F (18–24°C)
Neon Green Rasbora
Microdevario kubotai
- Adult size
- ≤ 0.8" (≤ 2 cm)
- Aquarium size
- 14 US gal (54 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 68–81°F (20–27°C)
Neon Red Rasbora
Sundadanio rubellus
- Adult size
- ≤ 0.8" (≤ 2 cm)
- Aquarium size
- 11 US gal (40 L) or larger / ≥ 19.7" (≥ 50 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–79°F (22–26°C)
Netted Leporinus
Leporinus reticulatus
- Adult size
- ≤ 5.9" (≤ 15 cm)
- Aquarium size
- 125 US gal (473 L) or larger
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 68–81°F (20–27°C)
Nigeria Red Kribensis Cichlid
Pelvicachromis taeniatus
- Adult size
- ≤ 3.1" (≤ 8 cm)
- Temperament
- Peaceful
- Zone
- Middle swimmer
- Temp
- 72–79°F (22–26°C)
Nijssens Corydoras
Gastrodermus nijsseni
- Adult size
- ≤ 2" (≤ 5 cm)
- Aquarium size
- 11 US gal (43 L) or larger / ≥ 17.7" (≥ 45 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 72–79°F (22–26°C)
Ninja Woodcat
Tatia musaica
- Adult size
- ≤ 2.4" (≤ 6 cm)
- Aquarium size
- 20 US gal (75 L) or larger
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 72–79°F (22–26°C)
Nkhomo-benga Peacock Cichlid
Aulonocara baenschi
- Adult size
- ≤ 4.7" (≤ 12 cm)
- Aquarium size
- 64 US gal (243 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 77–84°F (25–29°C)
Normans Lampeye Killifish
Poropanchax normani
- 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
- 72–79°F (22–26°C)
Northern Mountain Swordtail
Xiphophorus nezahualcoyotl
- Adult size
- ≤ 2.4" (≤ 6 cm)
- Aquarium size
- 40 US gal (150 L) or larger / ≥ 35.4" (≥ 90 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–79°F (22–26°C)
Ocellated Snakehead
Channa pleurophthalma
- Adult size
- 13.8" (35 cm)
- Aquarium size
- 238 US gal (900 L) or larger / ≥ 94.5" (≥ 240 cm) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Bottom to middle swimmer
- Temp
- 72–82°F (22–28°C)
Ocellifer Catfish
Synodontis ocellifer
- Adult size
- ≤ 7.9" (≤ 20 cm)
- Aquarium size
- 132 US gal (500 L) or larger / ≥ 35.4" (≥ 90 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 73–82°F (23–28°C)
Odessa Barb
Pethia padamya
- Adult size
- ≤ 1.8" (≤ 4.6 cm)
- Aquarium size
- 19 US gal (72 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle swimmer
- Temp
- 61–77°F (16–25°C)
Omba Rainbowfish
Melanotaenia dumasi
- Adult size
- ≤ 4.7" (≤ 12 cm)
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 77–82°F (25–28°C)
One-Lined Pencilfish
Nannostomus unifasciatus
- Adult size
- ≤ 1.6" (≤ 4 cm)
- Aquarium size
- 16 US gal (60 L) or larger / ≥ 29.5" (≥ 75 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 73–82°F (23–28°C)
Onesided Livebearer
Jenynsia lineata
- Adult size
- ≤ 4.7" (≤ 12 cm)
- Aquarium size
- 29 US gal (110 L) or larger / ≥ 35.4" (≥ 90 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 64–77°F (18–25°C)
Onespot Squeaker
Synodontis notatus
- Adult size
- ≤ 10.8" (≤ 27.5 cm)
- Aquarium size
- 79 US gal (300 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 72–77°F (22–25°C)
Orange Spotted Snakehead
Channa aurantimaculata
- Adult size
- ≤ 15.7" (≤ 40 cm)
- Aquarium size
- 159 US gal (600 L) or larger / ≥ 59.1" (≥ 150 cm) minimum length
- Temperament
- Aggressive
- Zone
- Bottom to middle swimmer
Orange Striped Catfish
Synodontis flavitaeniatus
- Adult size
- ≤ 7.7" (≤ 19.5 cm)
- Aquarium size
- 53 US gal (200 L) or larger / ≥ 35.4" (≥ 90 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 73–82°F (23–28°C)
Orinoco Peacock Bass
Cichla orinocensis
- Adult size
- ≤ 24.3" (≤ 61.7 cm)
- Aquarium size
- 350 US gal (1325 L) or larger / ≥ 96" (≥ 243.84 cm) minimum length
- Temperament
- Aggressive
- Zone
- Middle swimmer
- Temp
- 81–84°F (27–29°C)
Ornate Bichir
Polypterus ornatipinnis
- Adult size
- ≤ 23.6" (≤ 60 cm)
- Aquarium size
- 171 US gal (648 L) or larger / ≥ 70.9" (≥ 180 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 77–82°F (25–28°C)
