Can Angelfish and Upside-Down Catfish live together?

Angelfish and Upside-Down Catfish are possible with care. 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

Angelfish vs Upside-Down Catfish

Angelfish

Pterophyllum scalare

Upside-Down Catfish

Synodontis nigriventris

Verdict:Possible with care

Side-by-side specs

Cichlids

Family

Catfish

6″

Adult size

4″

55gal

Min tank

30gal

76–84°F

Temperature

72–79°F

6–7.5

semi-aggressive

Temperament

peaceful

Solitary

Schooling

mid

Water level

top

Compatibility notes

warnAngelfish and Upside-Down Catfish only narrowly overlap in temperature — keep within 76–79°F.

Try both in the builder →Compare different species