e55MD,
I want to apologize for the problems you are having with this incredible Conspic Angelfish, which is now having mouth problems. I do not know what could have transpired, and can assure you that this fish looked perfect upon leaving our facility. I personally inspected this fish before packaging, along with our Operations Manager, and one of our most skilled fish husbandry staff members which is routine for us on fish such as this.
For some odd reason fish of the genus Chaetodontoplus are more prone to problems associated with their mouths. In most circumstances, this problem can be directly related to some form of trauma.
These fish are oftentimes skittish until they settle in and become accustomed to their new surroundings, and it is not uncommon for Chaetodontoplus to smack into the sides of the aquarium when startled. Additionally trauma associated with defending themselves from aggressive behavior is another very common way these fishes’ mouths can become damaged.
Defending themselves from other Angelfish species is the most common, where the aggressor will nip at, and use its cheek spine located on the bottom of their operculum in a defensive manner and is normal behavior for these fishes. Angelfish normally use their mouth to try and defend or even attack, which normally can cause such an injury. Surgeonfish can also be problematic as well, using their scalpel like tail spine to ward off potential threats.
Unlike Angelfish of the genus Pomacanthus spp., Holacanthus spp., Euxiphipops spp. and infrequently Genicanthus spp. which seem to be more prone to coming down with the viral infection Lymphocystis certain times of the year, Chaetodontoplus spp. are far more resilient, and rarely show signs of this infection.
It is a very good sign the fish is eating well. This sort of trauma takes several weeks to even a month to heal properly. I recommend removing any possible threats from the aquarium display where this fish resides, and keep feeding well and making frequent water changes. We will be more than happy to extend your guarantee for an additional 30 days to ensure this incredible fish makes the successful transition into your display.
Regards,