Crabby Cravings
Hermit crab and exotic pet supplies
Coenobita violascens - Violas
Coenobita violascens - Violas, purple Indonesian hermit crab
Identifying features: Young violas are usually a beautiful deep red or orange colour which transitions through to purple, blue, brown or even black as they age. The eyes are a longer oval shape with slender eyestalks that are very different to that of C brevimanus. They also feature red mouthparts and a specially adapted predatory claw.
Colour range: Red or orange with some cream as youngsters, transitions to purple, blue or brown with colouration being highly varied across the body during this transition.
Temperature: 27 – 30c
Humidity: 80%
Shell preference: More “cone shaped” shells such as landsnails, whelks, foxhead, babylonia, turitella and Bursa rana frog shells. Tends to dislike turbos but will sometimes take them.
Dietary needs: Violas show more of a preference for animal based protein than other species and will actively hunt isopods in their enclosure. Offering more regular seafood, insects and meat either fresh or dried is appreciated. This should be offered as part of a varied natural diet.
Coenobita violascens are a beautiful and less commonly kept species of hermit crab. I have found mine to be very vocal, often chirping to generally communicate not just because they are distressed, and the youngsters are just as loud as the adults! Due to similar colouring adults can be sold as C brevimanus or with “common names” which are applicable to both species so always confirm ID before buying.
It is common for smaller fresh imports to arrive in what we consider ridiculously long shells that can have two inches or more of entirely “wasted” space, despite this the little ones still climb and navigate well and seem well adapted to the issues it can cause. Larger specimens frequently arrive in battered “fairy” landsnail shells which often feature holes from transit due to their thin construction. Long, lightweight shells that allow speedy movement are often favoured and it is possible to provide for all sizes using landsnail shells alone. Despite this a variety of types should always be offered to cater for the wide range of tastes this species presents.
Temperament wise they are quite shy and skittish around humans, they do have a reputation for being rarely seen within the crabitat but with time and LOTS of cover they really can come out of their shells. Keeping violas in a species only setup with cover that branches across the entire tank maximises their confidence and encourages them to be more active even when people are around. Simulating an undergrowth type area with lots of leaf litter, foliage cover and branches to climb provides a feeling of security while allowing you to see them more. They are very strong diggers and climbers so offering plenty of opportunities is wise, many show a preference for camouflaged sleeping areas higher up. Tunneling while common seems to be most prevalent in setups that are more wide open spaces.
Written by Rachel for Crabby Cravings, not to be reproduced or reused without permission.
