Can Oscar and Siamese Algae Eater live together?

Oscar and Siamese Algae Eater are not compatible. The comparison on this page runs the same compatibility engine as the tank builder, checking temperature and pH overlap, predation by size, temperament, and known hard-pair conflicts.

Species Comparison

Oscar vs Siamese Algae Eater

Oscar

Astronotus ocellatus

Siamese Algae Eater

Crossocheilus oblongus

Verdict:Not compatible

Side-by-side specs

Cichlids

Family

Algae Eaters

13″

Adult size

5.5″

75gal

Min tank

30gal

74–81°F

Temperature

73–79°F

6–7.5

6.5–7.8

aggressive

Temperament

peaceful

Solitary

Schooling

Solitary

mid

Water level

bottom

Compatibility notes

criticalOscar is aggressive and will bully peaceful Siamese Algae Eater.

Try both in the builder →Compare different species