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Fish Freshwater Care: medium Peaceful

Spined Loach

Cobitis taenia
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Other names: Cobitis
Group: Loaches and bottom dwellers · Family: Cobitidae · Origin: Europe — sandy-bottomed rivers and lakes of Western and Central Europe

A small coldwater scavenger with rows of dark spots on its sand-colored body and a folding spine under its eye. It lives buried in sand; it needs an unheated aquarium with fine sand.

Will it suit my tank?

Last updated October 16, 2026

Temperature
10–20°C
pH
6.5–8
Adult size
10 cm
Minimum tank size
80 liters
Social structure
Colony
Group
at least 3, ideally 5+
Swimming zone
Bottom
Diet
Omnivore
Breeding
Egg scatterer

Water parameters

Temperature10–20°C
pH6.5–8
Recommended range
Considered shrimp safe Suitable for planted tanks

Overview

October 16, 2026 · Suggest an edit

The spined loach is a small scavenging fish that lives in sandy-bottomed waters of Europe. Its sand-yellow body has rows of dark spots along the side; under its eye it carries a small spine that it raises when in danger. It stays buried in the sand all day and feeds by passing sand through its mouth and sifting it. It is protected in many European countries. Many endemic spined loach (Cobitis) species also live in Türkiye; these fish should not be collected from the wild, and aquarium fish should not be released into the wild either.

Tank Setup

October 16, 2026 · Suggest an edit
  • At least 80 liters and 80 cm of length for 3–5 individuals.
  • 10–20°C; no heater is needed, but the water should not rise above 22°C in summer.
  • Fine, soft sand is essential; at least 5 cm deep.
  • Clean, well-oxygenated water and gentle flow; a few flat stones and sturdy plants.

Diet

October 16, 2026 · Suggest an edit

It feeds on small organisms and organic particles in the sand. In the aquarium, offer fine sinking food, frozen daphnia, brine shrimp and bloodworms; the food must reach the surface of the sand.

Behavior and Compatibility

October 16, 2026 · Suggest an edit

Peaceful and shy. It waits buried during the day and is more active in the evening and at night.

Good companions: small, calm fish that like cold water: White Cloud Mountain minnows, small coldwater barbs.

Avoid: large and greedy bottom dwellers, goldfish, tropical species.

A short profile for this species

The Spined Loach page has the basics, but the sections below have not been written yet. If you keep this species, write a section from your own experience; it will be published under your name after editor approval.

Tank mates

This list is calculated automatically from the species profile and grows as new species are added to the catalog. Try it in the planner for a definite answer.

Usually compatible

Should not be kept together

Hobbyist notes

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Change history and contributors
  1. Page created · October 16, 2026