abstract
Fish Herder
i would describe what a few of my danios have as exactly an "underbite" as you stated earlier! they did not have it when they were very small but it seems that some of the males (i'm assuming they are the longer, slender ones instead of the fat ones i assume are the females) developed it over time, along with the whiskers i mentioned earlier...only some fish, though
just do your best to pop in every once in awhile and make sure it doesn't get any bigger, or look infectious...we all know how well you care for bettas so i'm sure you will help just fine w/ these danios...and maybe let the guy who is taking care of the tank know there are better/easier ways to change water (i.e. using a python) that would take him a mere 10 minutes a week!!
just do your best to pop in every once in awhile and make sure it doesn't get any bigger, or look infectious...we all know how well you care for bettas so i'm sure you will help just fine w/ these danios...and maybe let the guy who is taking care of the tank know there are better/easier ways to change water (i.e. using a python) that would take him a mere 10 minutes a week!!