Wow, they are still babies!!! Got about 20 to 22 more inches of growing to do!!! haha
word of advice: if it isnt secured, I would def use some silicone to secure that stone arch you made so that it doesnt get bumped into and hurt of your fish. Or even worse, one of them get trapped under there and get crushed... wouldnt be something nice to come home to or wake up to