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Try not turning the lights on and see if the IDS comes out. Catfish don't like light in general. The brighter the light, the more stressed they are.
Another reason could be that the gar bothers or bites it. Gars are indiscriminate, even stupid biters, especially of timid tank mates. Dos the IDS bear any marks?
Try not turning the lights on and see if the IDS comes out. Catfish don't like light in general. The brighter the light, the more stressed they are.
Another reason could be that the gar bothers or bites it. Gars are indiscriminate, even stupid biters, especially of timid tank mates. Dos the IDS bear any marks?