Today morning my RTG 20cms , jumped out of the tank and at evening the tail started to fall off, now used external antibacterial medicine....any suggestions regarding the situation? Whether the fin fall is caused by damage or Fin rot?
Look to be damaged, probably landed on a weird angle and broken it’s anal fin. It’ll grow back in a couple months time. Just make sure to keep your water clean and you should be fine. Same thing happen to my aro several years back.