I have had this long spine urchin for over a year now. Over the last three weeks, its spines have been getting shorter (6+ inches to around three). No spines are missing from it and I have not noticed an abnormal amount of spines in the sand. Some of the spines appear to have a small amount of filamentous algae attached. It appears to be acting normal as algae is not taking over the tank and he is still finding and eating the nori sheets I put in the tank. It also spawned on Sunday after a water change. Does anyone have any ideas on what could be causing this and is it any reason for concern? Thanks in advance.
Urchin Shrinking
- Thread starter swebb
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If the spines are deteriorating than that is not good....
Bret Brinkmann
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What fish are in the tank?
