What fish can live with Paradise fish?

Use the "Often compatible" lists as a shortlist, not a stocking plan. Always run the pair tool and check the footprint of your actual tank first. Verify behaviour for Paradise fish against your own reading before you buy.

What tank mates should you avoid with Paradise fish?

Avoid Betta, Guppy, Chili Rasbora based on size, temperament, or predation risk on file.

What size tank do Paradise fish need for a community?

120L is the planning floor for adult swimming space and bioload headroom. Long-term, a 146L+ tank lets adults use the full footprint without crowding the next species. Footprint, meaning length and front-to-back depth, matters as much as raw volume for active or territorial species.

Paradise fish tank mates

One of the first aquarium fish in the hobby. Hardy, colourful, and tolerant of cool water. Males are aggressive toward other labyrinth fish and long-finned species.

Evidence: partially verified

Confidence: high

Lists below are built from this species record (safest, best with, risky, unsafe) — each link opens a pair-level check, not a guarantee.

← Full Paradise fish profile·Compatibility checker·Tank builder·More gourami

Best tank mates (on file)

Merged from conservative safest and best with fields — de-duplicated by species.

Boesemani Rainbowfish Pair check
The Paradise fish profile lists Boesemani Rainbowfish as both safe and a recommended pairing. Boesemani Rainbowfish schools in groups of 6 or more, so plan room for the whole group rather than one fish. Water parameters barely overlap between the two, so check the temperature and pH ranges on both profiles before stocking.
Corydoras Catfish Pair check
The Paradise fish profile lists Corydoras Catfish as both safe and a recommended pairing. Corydoras Catfish schools in groups of 6 or more, so plan room for the whole group rather than one fish. Corydoras Catfish swims in the bottom zone while Paradise fish stays in the top, so the two will not crowd the same water column.
Gold / Chinese barb Pair check
The Paradise fish profile lists Gold / Chinese barb as a recommended pairing. Gold / Chinese barb schools in groups of 6 or more, so plan room for the whole group rather than one fish.
White Cloud Mountain Minnow Pair check
The Paradise fish profile lists White Cloud Mountain Minnow as both safe and a recommended pairing. White Cloud Mountain Minnow schools in groups of 6 or more, so plan room for the whole group rather than one fish.
Zebra Danio Pair check
The Paradise fish profile lists Zebra Danio as both safe and a recommended pairing. Zebra Danio schools in groups of 6 or more, so plan room for the whole group rather than one fish.

Risky or situational

From risky tank mates and broad avoid with (excluding “unsafe” below). May work with species-only setups, more water, or mature systems — read the pair page.

Neon Tetra Open pair check
Marked risky or situational on the profile. Tank length and group size change the outcome more than a temperament label does.
Dwarf Gourami Open pair check
Both species defend territory. The pairing needs a long footprint and rockwork or planting that breaks the sightline between two defended spots. Temperature ranges barely overlap between the two, so one species ends up living at the edge of its comfort window. Run the pair checker before stocking.
German Blue Ram Open pair check
Both species defend territory. The pairing needs a long footprint and rockwork or planting that breaks the sightline between two defended spots. Temperature ranges barely overlap between the two, so one species ends up living at the edge of its comfort window. Run the pair checker before stocking.

Fish to avoid with Paradise fish

From the unsafe list — predation, aggression, or space rules on this profile.

Betta See why (pair)
Betta conflicts with Paradise fish on temperament, predation, or footprint. The juvenile size in a shop tank is not the figure that matters here.
Guppy See why (pair)
Guppy conflicts with Paradise fish on temperament, predation, or footprint. The juvenile size in a shop tank is not the figure that matters here.
Chili Rasbora See why (pair)
Paradise fish is flagged as predatory or as likely to eat small fish, and Chili Rasbora at 2cm is well within an adult Paradise fish's gape.

Tank size and groups

Published minimum for Paradise fish: 120L — group minimum 1 .
Compatibility changes when the tank is too short for turning, too little for a real school, or too warm for one species and not the other — that is why pair checks include tank context, not only temperament.
Nearest litre hub to this minimum: 120L hub.

Easier alternatives to consider

Conservative beginner-peaceful picks from the library — not replacements for reading, but a shorter on-ramp than this species for a first tank.

Plan before you buy

Pair checks for every mix, then multi-species stocking in the builder.

Open compatibility checker Tank builder

Filtration & heating

A 120L minimum tank for Paradise fish needs a filter rated for at least 480L/hr turnover and a heater maintaining 16–24°C.

Filter buying guide →Heater buying guide →Beginner plants guide →