Thanks so much for the feedback and taking the time to give it a play!
others have had a similar sentiment to you about having to dodge the smaller fish.
it's technically not necessary, but it was not explained at all that you could let go of fish (and your tentacle will remain at your cursor)
and then you could also grab multiple things (per tentacle) by depressing and then pressing the lmb again. so if we develop it further I will definitely fix up the clarity and make the controls a little more intuitive.
I also see no reason (now that it's been mentioned to me) to not just have the tentacle track the cursor!