Cichlids: O
All cichlids whose common name starts with O, in alphabetical order. Each card links to its care guide.
13 species and 6 varieties
Oaxaca vieja
Vieja zonata
Freshwater9.8 in (25 cm) · 132 gal (500 L)75–84°F (24–29°C)
OB peacock cichlid
Aulonocara hybrid
Freshwater5.9 in (15 cm) · 63 gal (240 L)75–82°F (24–28°C)2 varieties
Ocellated kribensis
Pelvicachromis subocellatus
Freshwater3.9 in (10 cm) · 21 gal (80 L)75–81°F (24–27°C)
Odo cichlid
Nandopsis haitiensis
Freshwater10.2 in (26 cm) · 132 gal (500 L)75–84°F (24–29°C)
Orange chromide
Etroplus maculatus
FreshwaterBrackish3.9 in (10 cm) · 55 gal (210 L)68–82°F (20–28°C)
Orinoco cupid cichlid
Biotodoma wavrini
Freshwater4.7 in (12 cm) · 66 gal (250 L)77–84°F (25–29°C)
Orinoco peacock bass
Cichla orinocensis
Freshwater24.4 in (62 cm) · 528 gal (2,000 L)77–86°F (25–30°C)
Ornate hap
Protomelas ornatus
Freshwater7.2 in (18.2 cm) · 106 gal (400 L)75–82°F (24–28°C)
Ornate shell dweller
Lamprologus ornatipinnis
Freshwater2.4 in (6 cm) · 16 gal (60 L)75–81°F (24–27°C)
Ortega's dwarf cichlid
Apistogramma ortegai
Freshwater2.6 in (6.5 cm) · 16 gal (60 L)75–82°F (24–28°C)
Oscar
Astronotus ocellatus
Freshwater13.8 in (35 cm) · 95 gal (360 L)68–82°F (20–28°C)4 varieties
Owroewefi guianacara
Guianacara owroewefi
Freshwater5.1 in (13 cm) · 66 gal (250 L)77–84°F (25–29°C)
Oxyrhynchus hap
Hemitilapia oxyrhynchus
Freshwater7.9 in (20 cm) · 119 gal (450 L)75–81°F (24–27°C)
Planning a tank?
TankBud checks stocking and water fit as you build a tank, then tracks water tests, reminders and photos once it is running.
Track your tanksMaintain tanks for clients? See TankBud Pro