Surgeon caught wasted on smack (4,4)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

Homophone (caught = heard) of BLEW (wasted, as a verb, in the sense of spending a lot of money in a short time on luxuries or gambling), then TANG (smack = a taste). Surgeon = surgeonfish; the “blue tang” (for example Dory in Finding Nemo ) is a variety of surgeonfish.