Long Spine Urchin - Diadema setosumLong Spine Urchin (Diadema setosum) The Long Spine Urchin, Diadema setosum, is a striking marine algae grazer with a dark central body and extremely long, fine black spines. Also known as the Black Long Spine Urchin or Long spined Sea Urchin, it can be a useful addition to mature marine aquariums where natural algae control is needed. It is generally reef safe with corals, but it must be given plenty of space, stable water quality and careful handling

There are now 2 versions of this popular reef salt and both formulations are manufactured by a solar evaporative process

Temperature: Tropical: 22-28 deg C (72-82 deg F)

• 4 Blue

sometimes in loose pairs

The main consideration is territorial behaviour towards other fish rather than coral damage

Black Leopard

particularly if the shrimp is underfed

strong oxygenation and room to turn comfortably as it matures

Ideal for intermediate to advanced aquarists

Black Spotted Leopard Wrasse

Found across parts of the Indian Ocean and Indo-Pacific reef regions

orange to red-orange flanks and electric blue fin edging