Yes someone is confused here, dels do not get that large unless maybe pulled out of the wild at that size.
DO NOT try erys w/ cons even if they can't fit in their mouth mine has grabbed a 4 inch gymno balzani when he was 6 inches (they're about the same size as cons) and thrashed the hell out of it, killing it and ripping off a good chunk of its stomach area.
Very aggressive towards fish they MIGHT fit in their mouth too, keep that in mind. Mine is housed with an ornate bichir, a gold dust bichir, and a rope fish. The only one not bigger then the ery is the gold and he is 6 inches so only an inch short, he won't be bothering him. Mine has done very well with large bichirs. He sees practically anything else in the tank as a snack
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