The siamese algae eater (Crossocheilus oblongus) is a peaceful fish that grows to about 6 inches and spends its time near the bottom. It can be kept on its own, in a tank of 30 gallons or more, at 75–79°F and pH 6.5–8.
30 galsmallest tank
6″adult size
75–79°Ftemperature
6.5–8pH
1+group size
Peacefultemperament
Good tankmates
Avoid
- ✕White cloud mountain minnow: Siamese algae eater and White cloud mountain minnow need different temperatures (75–79°F vs 60–72°F).
- ✕Rosy barb: Siamese algae eater and Rosy barb need different temperatures (75–79°F vs 64–72°F).
- ✕Paradise fish: Paradise fish is aggressive and best kept alone.
- ✕Convict cichlid: Convict cichlid is aggressive and best kept alone.
- ✕Oscar: Oscar is aggressive and best kept alone.
- ✕Fancy goldfish: Siamese algae eater and Fancy goldfish need different temperatures (75–79°F vs 65–72°F).
- ✕Comet goldfish: Siamese algae eater and Comet goldfish need different temperatures (75–79°F vs 60–72°F).
- ✕Pea puffer: Pea puffer is aggressive and best kept alone.
From TankCoach's own species data: common hobby guidance for adults, rounded. Individual fish vary. Not veterinary advice.