[Upon being attacked, this guy was worried about the attacker and then put his fingers in his mouth. That meant either really dumb or strong enough to not view him as a threat.]

[and honestly he wasn't sure which one applied here]

... Lure? [his fins flare slightly]

... Ohhh, yeah, huh! It's a nature thing, isn't it? [his face busts into a relaxed smile] So, with the same idea...

If you stick a finger in a fish's mouth you expect to lose it, don'tcha?

[So, he should have bit down! ♪ It would be really threatening sounding if not for the fact he had been pulled a fair distance away from the water and had his mobility severely compromised.]