Severum tank mates
Heros severus
4 rated pairings from the Severum care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Severum needs at least 55 gallons on its own; every companion adds to that.
Good matches
3 · Compatible with normal care — watch space and numbers.
Bristlenose Pleco
Ancistrus sp.
20 gal min · 5" adult · Peaceful
Nocturnal algae eater that avoids conflict; helps maintain tank cleanliness without competing for food
Cardinal Tetra
Paracheirodon axelrodi
15 gal min · 2" adult · Peaceful
Small schooling fish that stay in upper water column; too small to trigger predatory behavior in well-fed severums
Rummy Nose Tetra
Hemigrammus rhodostomus
15 gal min · 2" adult · Peaceful
Peaceful schooling fish that occupy different zones; their small size and speed help them coexist safely
Use caution
1 · Works in the right setup; read the note before combining.Also recommended alongside Severum
Species whose own guides list Severum as a tank mate.
Blood Parrot Cichlid
Amphilophus citrinellus × Vieja melanurus
30 gal min · 8" adult · Semi-aggressive
Electric Blue Acara
Andinoacara pulcher hybrid
30 gal min · 6" adult · Semi-aggressive
Oscar
Astronotus ocellatus
75 gal min · 12" adult · Aggressive
African Butterflyfish
Pantodon buchholzi
30 gal min · 5" adult · Semi-aggressive
Arowana
Osteoglossum bicirrhosum
250 gal min · 36" adult · Semi-aggressive
Aureum Cichlid
Thorichthys aureum
40 gal min · 6" adult · Semi-aggressive
Banded Leporinus
Leporinus fasciatus
55 gal min · 12" adult · Semi-aggressive
Bucktooth Tetra
Exodon paradoxus
40 gal min · 2.4" adult · Aggressive
Climbing Perch
Anabas testudineus
40 gal min · 10" adult · Semi-aggressive
Delhezi Bichir
Polypterus delhezi
75 gal min · 14" adult · Semi-aggressive
Firemouth Cichlid
Thorichthys meeki
30 gal min · 6" adult · Semi-aggressive
Giant Gourami
Osphronemus goramy
200 gal min · 24" adult · Semi-aggressive
Green Terror Cichlid
Andinoacara rivulatus
75 gal min · 12" adult · Aggressive
Hoplo Catfish
Megalechis thoracata
75 gal min · 8" adult · Semi-aggressive
Jewel Cichlid
Hemichromis bimaculatus
30 gal min · 6" adult · Aggressive
L114 Leopard Cactus Pleco
Pseudacanthicus sp. L114
150 gal min · 24" adult · Semi-aggressive
Marble Oscar
Astronotus ocellatus
75 gal min · 12" adult · Aggressive
Midas Cichlid
Amphilophus citrinellus
75 gal min · 15" adult · Aggressive
Ornate Pimelodus
Pimelodus ornatus
180 gal min · 14" adult · Semi-aggressive
Peacock Bass
Cichla ocellaris
200 gal min · 24" adult · Aggressive
Pike Cichlid
Crenicichla sp.
55 gal min · 10" adult · Aggressive
Pinktail Chalceus
Chalceus macrolepidotus
150 gal min · 10" adult · Semi-aggressive
Red Devil Cichlid
Amphilophus labiatus
75 gal min · 12" adult · Aggressive
Sailfin Pleco
Pterygoplichthys gibbiceps
150 gal min · 24" adult · Peaceful
Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.