They seem indeed more active but it'd take a more rigorous, controlled side-by-side experiment to be certain. Until then, it's a maybe / seems so.
As you can see, accidents can happen then. They really must be with fish they cannot fit in their mouth by any stretch of imagination and any stretch of their mouth![]()
I'd say given the reputation of Gulpers, even if it was a 2" gulper and a full grown syno they wouldn't be 100% safe. Although, I can't help but laugh at the thought of a syno frantically swimming around the tank trying to shake a gulper off that's swallowed its fin.If you were talking about my tank where I have 4 synos and 3 gulpers, I'd say the synos (two eupterus and two hybrids) are not large enough to be 100% safe.