Sorry to hear you're having so much trouble with the little guy . If it turns out to be to much , Just put a shark in , and as soon as the lion fish get's to close to something , the shark eats him ...... hehehehehe
No but seriously , I know you'll be able to fix it . I look at everything you have done so far an I just know you will beat it . I wish it wouldn't take so long , but like I said before , all good things take time .