Striper Bass?

I went to seashore, and I caught 200 small stripper bass 1 months
agao, and they were all dead. Then I caught 15 of them, 2 weeks ago.
All except 4 are dead. Those 4 are about 2.5 inches long. I put them
in a spring water 1 gallon botto. They have lived for more than 10
days. I put some plants and pork in it. They eat them. They look
pretty happy, although most of the time, they just sit at the bottom,
only move when I move them or put food, or change light. I just use
cold tab water with no salt. They like the water, because they are
cold fresh/salt water fish.

I wonder if anyone raised or have striper bass? Can I put them with my
platy and danio? They look pretty aggressive to me. I caught those
fish by putting chicken in a net, and hundreds of them just came to
fight for the chicken near seashore. Big stripers are feed on sunfish,
crabs..