Green Tiger Loach
Cobitoidea sp.
The Green Tiger 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 150 litres (40 US gallons), water held at 77-86°F, and a pH of 6-7.8. Always keep a group of at least 6 - they feel safest in numbers.
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.
Green Tiger Loach Tank Setup
Give them at least 150 litres (40 US gallons) and a tight-fitting lid, since many loaches are escape artists. Keep the water at 77-86°F with a pH around 6-7.8; soft sand suits the ones that like to burrow. Always keep a group of at least 6 of their own kind - kept alone or in pairs they tend to turn shy, nippy, or wash out in colour. They reach about 21 cm as adults, so don't be misled by the small juveniles sold in stores.
What Do Green Tiger 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.
Green Tiger Loach Tank Mates
The Green Tiger Loach is peaceful, which is the first thing to weigh up when you choose tank mates. It's a known fin-nipper, so avoid bettas, guppies, and other slow, long-finned fish. At around 21 cm fully grown, it needs tank mates that can hold their own against its size and appetite. It's a shoaling fish, so settle a group of 6 or more of its own kind before adding anything else - a stressed, lonely fish is far more likely to nip or hide. 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 Green Tiger 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.
Green Tiger Loach - frequently asked questions
What size tank do Green Tiger Loaches need?
Green Tiger Loaches need a tank of at least 150 litres (40 US gallons). A bigger tank is always easier to keep stable, and gives them more room to settle in and behave naturally.
How many Green Tiger Loaches should I keep together?
Keep a group of at least 6. Green Tiger Loaches are a shoaling species and become stressed, lose their colour, or hide when kept singly or in pairs.
What water parameters do Green Tiger Loaches need?
Keep them at 77-86°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 Green Tiger Loaches eat?
Green Tiger 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 Green Tiger Loaches good for beginners?
Green Tiger 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 Green Tiger Loaches
- Buying fewer than 6 - Green Tiger Loachs need a proper school to feel secure; isolated individuals hide, fail to colour up, or become stressed.
- Underestimating tank size - the minimum footprint is 150 litres (40 US gallons); impulse buying into a smaller tank leads to stress and shortened lifespan.
- Mixing with long-finned fish - Green Tiger Loachs will nip at bettas, angelfish, and other fish with flowing fins, causing stress and infection risk.
Building a community? Run the full list through the stocking calculator before you add anything else.
Great tank mates
Chosen from temperament, overlapping temperature/pH bands, plausible minimum tank footprints, and size versus yours in App-aquatic data. Hobby nuance always wins - verify stocking and temperament before purchasing.
Check Green Tiger Loach against any other fish → Compares water parameters, predation risk, fin nipping and tank size, and draws both at life size.
Fish to avoid mixing with Green Tiger 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
- Common GoldfishGoldfish - prefer cooler, harder water that tropical fish cannot tolerate
