To be honest I cannot tell based on the pictures. Do you have a photo of the underneath side of the frog?

I will however jump in regarding something you mentioned - - you said you keep changing your filter media. I really recommend you not do this.

Have you researched cycling a tank? Your filter media is the most important thing in your tank - it holds the bacteria colony that you want and need to break down ammonia into nitrite then into nitrate. Throwing away the media means you throw away the colony and you are left with a filter doing nothing more than making bubbles in your tank.

Please, start googling the nitrogen cycle. Filter media should never be changed. When you are doing water changes, just swish it around in a bucket of dirty water if it has excessive build up on it but do not let it come in contact with fresh, unconditioned/untreated water. Chlorine kills bacteria. If you even have media that is breaking down and needs to be replaced, do so in stages. I prefer using media balls/bio balls as part of my filtration for this reason.