Its probably form years ago lol and just spent its time hiding in the gravelLast night I was sitting down watching my tank after I had shut the lights off, and I can hear gravel moving. I look and here my eels are fighting over a worm. Here's the kicker, I fed them one worm yesterday, and one of my frogs ate it in one gulp. So where they got that worm I'll never know.???
Its probably form years ago lol and just spent its time hiding in the gravel
or more then likely one of your fish spit one up