Hi all. I have a wonderful betta fish in a 5 gallon tank. I have had him since June 2019. I recently put new rocks in with his cleaned tank a week ago. Tonight I notice this clear jelly goo in the tank. Its mostly on the top but if you move the water ,it sticks to the to the side. I have never seen this happen and dont want it to hurt him. Hes been acting fine and eating as much as usual, etc... I do not have a filter running bc when I've even tried to turn it on he gets scared . Please help.
