Siberian Spiny Loach
The Siberian spiny loach, also called the Siberian tiger loach, is caught in the wild in southern China and Taiwan. Not only is this loach adaptable, thriving on both sides of the Taiwan Strait, but the Siberian spiny loach is also personable and active. This loach does well in the aquarium and will thrive if kept in small groups of three or more. Water temperature needs to be under 80 degrees, however, and the Siberian spiny loach can tolerate temperatures into the high 60s. The loaches will pair up when they reach the adult stage; females are larger, about 4 inches, and males about 3 inches. Like most loaches in the fish tank, they will swim along the bottom and middle zones of the aquarium and feed on food that sank to the bottom.
Quick Facts
| Feature | Detail |
|---|---|
| Origin | South China and Taiwan |
| Adult Size (Female) | About 4 inches |
| Adult Size (Male) | About 3 inches |
| Water Temperature | Under 80°F; tolerates high 60s |
| Group Size | Three or more for best behavior |
| Activity Level | Active, swims in bottom and middle zones |
FAQ
What is the ideal water temperature for Siberian spiny loaches?
The ideal water temperature is under 80 degrees Fahrenheit, with a tolerance range into the high 60s.
How big do Siberian spiny loaches grow?
Females grow to about 4 inches, while males reach about 3 inches when mature.
Do Siberian spiny loaches need to be kept in groups?
Yes, they thrive best in groups of three or more.

Alexandra Brown –
The Siberian spiny loach is very active and social. I kept a group of four and they swim together nicely. They adapt well to my tank setup and eat the sinking pellets I provide. Water temperature stays around 72°F, which is within their ideal range. They look healthy and seem to enjoy their environment.
Neil Fraser –
I bought this loach for my community tank. It’s peaceful and stays near the bottom. The males and females paired up after a few weeks, which was interesting to watch. I keep the water temperature at 68°F, and they seem comfortable.
Abigail Dowd –
Great addition to my aquarium. The loaches are curious and active, especially during feeding time. I have three of them now and they don’t compete for food. They stay in the middle and bottom layers, which fits well with my tank layout.