in my first fbt vivarium i had feeder fish just for looks and a small cat fish and they did just fine it also gave my frogs some to stare at haha they tried but could never catch them and for the food i use flukers to and my crickets are fine i also just found that i put my crickets in there own 10 gal vivarium with one plant, sticks and a broken pot and they seem to live longer and get bigger ( is this cause there not as stressed) also it feed them carrot and lettus it help the toad belliie get bright red/orange if you have anymore questions be free to asked
btw all the specfics on your tank are fine
