the only concern I would have with putting the net in the tank and leaving would be catching the wrong fish early in the day and it being unable to get out, getting stuck and dying.....my rabbitfish went into a net that fell into the tank and was stuck...luckily we were home and "rescued" it! Pretty freaked out!
We caught a clownfish with a small barbless hook...was a bit fun too! Could've caught many of the other fish but took a long time to catch this fish...of course you never get the intended fish always the ones you don't want to catch
