Species Profile
Forktail Rainbow
Pseudomugil furcatus
Rainbowfishpeaceful
Adult size
2″
Minimum tank
15 gal
Temperature
73–82°F
pH
7–8
Schooling
Group of 6+
Water level
top
Diet
Micro pellets, baby brine shrimp, frozen
Notes
Tiny rainbow with brilliant yellow-tipped fins; males spar harmlessly with stunning fin displays. Native to Papua New Guinea. Wants a planted nano tank, peaceful tankmates, and a group of 6+ to see the displays.
Compatible Tankmates
Best tank mates for Forktail Rainbow
Every species below passes the compatibility engine when paired with Forktail Rainbowin a suitably sized tank. Verdicts come from the same rules the builder uses — click a card to see that species' own care profile and its tank mates in turn.
Neon Tetra
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Cardinal Tetra
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Rummynose Tetra
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Harlequin Rasbora
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Zebra Danio
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Fancy Guppy
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Endler's Livebearer
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Platy
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Molly
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Swordtail
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Male Betta
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Dwarf Gourami
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Photo: Guérin Nicolas (messages) / Wikimedia Commons · Source · CC-BY-SA-3.0