i think the original plan was to put them there to control vegetation . now because of the year round warm water they are in large numbers and considered dangerous to other water bodies . they have strict regs. on killing and gutting them before removal . funny you mentioned the taste of them as bland because they have almost no fish odor when handled as well . and let me add this one little information fact to all ....THEY ARE SOME kinda funky to clean .....the green juice spraying out of them is quite repulsive and the black body cavity lining is really strange as well ....you must gut them and rinse them before you fillet them due to the yellow/green juice issue tainting the meat as well as being part of the regs. on them anyway .
glad yawl enjoyed the adventure but i am not sure i will be doing it again myself and my other half said dont bring any of them nuclear fish home anyway ...LOL