Fork-tailed Loach (Cobitoidea sp.) in a freshwater aquarium
Intermediate carePeacefulBottom dwellerAsia

Fork-tailed Loach

Cobitoidea sp.

The Fork-tailed Loach (Cobitoidea sp.) is a peaceful fish that's a good step up once you have a little experience. Give it a tank of at least 175 litres (46 US gallons), water held at 73-84°F, and a pH of 6-7.8.

Care levelIntermediate
TemperamentPeaceful
Min tank size46 US gal
pH range6-7.8
Temperature73-84°F
Max size4.7 in (12.0 cm)
Captive lifespan5-12 years
SchoolingNo
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Captive lifespan reflects typical experience in a home aquarium, not maximum recorded age; genetics, sourcing, and care vary.

Natural distribution

Asia

  • East & Southeast Asia

Regional colours match the stocking calculator's origin map.

Fork-tailed Loach Tank Setup

Give them at least 175 litres (46 US gallons) and a tight-fitting lid, since many loaches are escape artists. Keep the water at 73-84°F with a pH around 6-7.8; soft sand suits the ones that like to burrow. They reach about 12 cm as adults, so don't be misled by the small juveniles sold in stores.

What Do Fork-tailed Loaches Eat?

They're not fussy eaters - feed a varied diet, rotating good-quality dry, frozen, and gel foods rather than the same thing every day, and match the food size to their mouths.

Fork-tailed Loach Tank Mates

The Fork-tailed Loach is peaceful, which is the first thing to weigh up when you choose tank mates. Good matches come down to the whole stocking list working together - temperature, tank size, and temperament - not any single label. Before you buy, run your full stocking list through our stocking calculator. It weighs temperament, adult size, and water needs together, which a single species page can't do on its own.

Are Fork-tailed Loaches Good for Beginners?

Doable once you test water regularly and catch problems before fish look sick. If this is your first tank, pick something more forgiving and come back later.

Fork-tailed Loach - frequently asked questions

What size tank do Fork-tailed Loaches need?

Fork-tailed Loaches need a tank of at least 175 litres (46 US gallons). A bigger tank is always easier to keep stable, and gives them more room to settle in and behave naturally.

What water parameters do Fork-tailed Loaches need?

Keep them at 73-84°F with a pH of 6-7.8, steady rather than chased to an exact figure. In a cycled tank, ammonia and nitrite should both read 0 ppm, with nitrate kept low through regular water changes.

What do Fork-tailed Loaches eat?

Fork-tailed Loaches are omnivores and aren't fussy eaters. Feed a varied mix of good-quality dry, frozen, and gel foods, and match the food size to their mouths. Feed small amounts once or twice a day, and remove anything they don't eat.

Are Fork-tailed Loaches good for beginners?

Fork-tailed Loaches are best for keepers with a little experience. They are manageable once you test water regularly and catch problems early; a complete beginner may prefer something more forgiving first.

Common mistakes with Fork-tailed Loaches

  • Underestimating tank size - the minimum footprint is 175 litres (46 US gallons); impulse buying into a smaller tank leads to stress and shortened lifespan.

Building a community? Run the full list through the stocking calculator before you add anything else.

Fish to avoid mixing with Fork-tailed Loaches

These well-known species are commonly sold alongside this fish but are not recommended tank mates - verify before purchasing.

  • OscarPredator - Oscar will eat or injure smaller tank mates
  • Pea PufferPredator - Pea Puffer will eat or injure smaller tank mates
  • Betta (Male)Predator - Betta (Male) will eat or injure smaller tank mates