well an antibactirial treatment should help and i's use a vitamin supliment to help it recover and something like metaflex or mythalyne blue will help it heal.
if it dosen't show improvements in the next 3-4days put it down and sorry if i sound hartless but theres no reason for it to suffer longer than it has to.
"Large wounds can be sealed with pharmacy-grade petroleum jelly (e.g. Vaseline) or similar non-toxic skin dressing cream (consult the veterinarian regarding the suitability or otherwise (potential ichthyotoxicity) of any such cream). The cream will serve as an artificial barrier to infection while the wound heals, and in the case of large wounds, may help reduce osmotic stress."
Hi Feline, the water checks out fine the ph is 7.5 and there is no other fish in their, just these two. Hey Cocker (OUCH) bet that hurt. Could the other catfish have spiked it, cos i'm led to beleive that these fish have poisenous spines?