Tank setup
A minimum 300L aquarium suits Long-spine Urchin. Provide hiding spots and stable water — this species thrives in a well-filtered community setup.
Where to buy
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Overview
What to know before you buy.
The Long-spine Urchin is a dramatic and highly effective algae-eater, recognized by its small, round body and exceptionally long, sharp, black spines. It is an herbivore that will graze on all types of algae, including tough turf algae and coralline. It is reef-safe in that it won't eat corals, but it is clumsy and can knock over unsecured frags. Its spines are venomous and can inflict a very painful wound, so extreme caution is required. An interesting fact is its 'eye,' a reddish, light-sensitive ring of tissue around its anus on top of its body, which allows it to detect and point its spines at passing shadows or threats.
Key traits
peaceful
reef safe
large
moderate
herbivore
algae eater
Compatibility
Select a tank to see how this species fits.
Care guide
Everything you need to keep Long-spine Urchin healthy in a South African setup.
Water parameters
Keep pH 8.1–8.4 and 24–28°C. Stable parameters matter more than chasing perfect numbers — acclimate new arrivals slowly.
Feeding
Long-spine Urchin is herbivore. Feed a varied diet appropriate for invertebrates — quality flakes, pellets, or frozen foods sized to the mouth.
Behaviour
Long-spine Urchin is generally peaceful. Observe during feeding and at lights-out for true temperament.
Tankmates
Pair with similarly sized peaceful tankmates in invertebrates. Avoid fin-nippers or species that outgrow this fish.
Breeding
Breeding notes for Long-spine Urchin vary by line and water chemistry — ask your local shop about proven pairs in SA.
Keeping invertebrates?
Invertebrates read water quality more sensitively than fish — condition and test rather than guess.
Availability confirmed with the distributor before dispatch · free delivery over r750
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