Can you put pinfish in a tank?

i have had several in my tank over the years and they do really well.the only drawback is they tend to eat everything that is smaller than themselves.i dont know if they r a legal specieces to keep because no one will give a definite yes or no. so good luck and get a large hermit crab as it will keep him in check and away from your other fish. trust me it works. mine has blue and yellow stripes and was caught with a dip net . i thought it was a minnow.