Advanced freshwater fish: J
All advanced freshwater fish whose common name starts with J, in alphabetical order. Each card links to its care guide.
5 species

Jade betta
Betta iaspis
Freshwater0.9 in (2.4 cm) · 8 gal (30 L)75–86°F (24–30°C)
Jaguar cichlid
Parachromis managuensis
Freshwater15.7 in (40 cm) · 119 gal (450 L)75–82°F (24–28°C)
Jau catfish
Zungaro zungaro
Freshwater55.1 in (140 cm) · 793 gal (3,000 L)72–82°F (22–28°C)
Javari banded knifefish
Gymnotus javari
Freshwater7.9 in (20 cm) · 66 gal (250 L)75–82°F (24–28°C)
Juelin's licorice gourami
Parosphromenus juelinae
Freshwater1.2 in (3 cm) · 5 gal (20 L)72–81°F (22–27°C)
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