Not a very expensive fish but my ex-TSN at 16" ate 1 of my Geo. Suriamensis, had grown 3 up from quite young had reached about 6" when he was swallowed.
my rtc ate 2 pacus at 6" and 2 tsn at 7".. the rtc was just around 10" or so when it ate the 2 tsn.. and now he's trying to chase a pacu at 16" and he's now 22".. very naughty fish..
Well, my albino Channel Cat has eaten one south american lungfish 6 inches and two severums about 4 and 5 inches. I think I might find him a new home soon.