First Time Fish Keeper

Snail Focus: Chitons

Chiton

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Caution

Fist thing to know, some are good guys & should be left in your aquarium, others are predatory and should be removed. Identifying the species of Chiton is essential to know if it is reef safe or not, but it is only a very small minority of Chitons that are predatory. You would have to be VERY unlucky to end up with a predatory species in your aquarium.

Chitons, or Sea Cradles, are often found as hitch-hikers on liverock. They look a bit like a woodlouse (Chuggy Pig), with 8 over-lapping leathery looking shells. There are over 800 identified species of Chitons.

Chitons come in various in colours, ranging from white-brown to green, yellow, purple and even red. They usually curl up into a ball when removed from the rockwork.

Some grow up to 33 cm in length but ones found in the aquarium do not usually grow larger than 1-6 cm

Tank Requirements

Colourful Chiton

Feeding

Nearly all chitons are grazing herbivores. They scrape microscopic algae and bacteria off the rocks they are grazing. A few species of chitons are predators eating other small invertebrates, such as shrimp and possibly even small fish.

Chitons are excellent cleaners of tanks, as they will spend all day and night grazing on algae. Their various colourings and patterns’ will make an excellent addition to your clean up crew.

Identification of Chiton Species

As mentioned earlier, there are over 800 know species of Chiton. As a result of this, I can’t sit here and write about each one!

A few good resources for you though if you want to be sure of the species:

http://www.bily.com/pnwsc/web-content/Chiton%20Identification.html

http://emeralddiving.com/id_chitons.html

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