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Glam Journal

How many hillstream loaches should be kept together?

Author

Chloe Ramirez

Updated on March 10, 2026

How many hillstream loaches should be kept together?

How many hillstream loaches can be kept together? Most people only get one because they’re more expensive and can cost around $15 each. We recommend getting just one or a group of three or more. If you get two, the stronger one may bully the weaker one over food or territory.

Are hillstream loaches territorial?

Hillstream loaches are best in school of three or four. Placing them in the tank singly may not auger well with them as they are a territorial lot.

Are Hillstream loaches aggressive?

They’ll get along very well with reticulated hillstream loaches. Besides aggression, the main thing you’ll want to look for in a tank mate is temperature preference. Hillstream loaches like the water to be a little on the colder side so that rules out a lot of tropical freshwater fish.

Are hillstream loach shy?

The Hillstream Loach is a really neat little fish that is great at eating the small crustaceans and larvae (aufwuchs) that grows in algae. This loach can be very shy and won’t really show themselves in the home aquarium too much.

Do Hillstream loaches need groups?

These are freshwater fish and are suitable for community tanks because of their peaceful nature – they are totally safe to keep with other non-aggressive fish, snails, shrimp, and live plants. We sell these fish in schools of 3 or more because they are known to do best in groups of 3 or more.

How many gallons does a Loach need?

They require an aquarium of at least 20 gallons. Allow 3-5 gallons of water for each Loach you add to your tank.

Can I keep a Hillstream Loach in a 10 gallon?

Hi! Generally it is not their size that is the limiting factor in their tank size it is the environment they need. These loaches come from swift moving streams, thus their body shape. A 20 long is considered the smallest to allow for strong currents created by a powerhead or fan.

Will hillstream loach eat baby shrimp?

Feeding. Hillstream loaches are omnivores and grazers, so they will feed on algae and biofilm in your tank. They also like to eat most kinds of live foods, such as insect larvae, tubifex, daphnia, and frozen or live brine shrimp.

Are Hillstream loaches Hardy?

Water Parameters. The base water parameters for a reticulated hillstream loach are fairly straightforward. They are reasonably hardy which means you do have some wiggle-room, but it’s best to keep them in water with the following levels.

Are Hillstream loaches Tropical?

Hillstream loaches like the water to be a little on the colder side so that rules out a lot of tropical freshwater fish.

Do Hillstream loaches change color?

I have a Hillstream Loach that will change to a very dark mottled pattern if sucking on to the filter (which is black) and the change to a light brown/green when on the gravel on the bottom. I was very excited when I first noticed this behaviour as I didn’t think they could alter their pigment. Nothing to worry about!

What is another name for Sewellia lineolata?

Scientific Name: Sewellia lineolata (Valenciennes, 1849) Common name: Gold Ring Butterfly Sucker, Reticulated Hillstream Loach, Tiger Hillstream Loach. Synonyms: Balitora lineolata (Valenciennes in Cuvier & Valenciennes, 1849:99)

Can you keep Sewellia in the UK?

A Sewellia very similar in appearance to S. lineolata, but with greater spotting, has been imported into the UK but may be a distinct species. Breeding: Quite a few fishkeepers have reported accidental spawnings, which is good considering it s hardly a widely kept species.

How many species of Sewellia are there?

Notes: The Sewellia genus contains nine species: S. albisuera, S. breviventralis, S. diardi, S. elongata, S. speciosa, S. pterolineata, S. patella, S. marmorata and S. lineolata. A Sewellia very similar in appearance to S. lineolata, but with greater spotting, has been imported into the UK but may be a distinct species.

Are parasewellia and Sewellia the same thing?

However it appears that Parasewellia should be regarded as synonymous with Sewellia, with one of the new species representing a resdescription of S. albisuera and another corresponding to S. sp. ‘SEW01’ (J. Freyhof, pers. comm.).