This has got to beat all...for me at least. Remember how I said my turtles are so polite (I know, it will end one day:), well this takes the cake....
This morning I fed my two turtles salmon. It was time for a long-chain-omega-3-FA-boost, I felt, it's been a couple of months maybe. Anyway, chunks of cooked salmon going in, turtles all excited, downing salmon chunks as fast as they can, and the fish were checking it out. The fish took the little flakey pieces floating freely and ran with them. Pretty soon, everyone in the tank knew and it was like a shark frenzie!! 25+ fish and two turtles, mouths everywhere, color everywhere and then a fight broke out!!!
One of the red swordtails had a "chunk", I don't mean a fish-sized piece, ...a moderately sized Chunk! He tried to haul off with it, dashing away from the swirl of bodies and mouths. One of the turtles spied that chunk trying to make a run for it and took off after it. Oh, no, I thought. The swordtail was almost exactly the same color of red as that chunk of salmon... and how did that translate in a turtle's eye? Would he be able to distinquish the two apart? Oh, my Gosh!!! This was happening really FAST!! The turtle was not remembering about being polite!!! He was just going all out to catch that chunk that was getting away!!!
But, I've raised my turtles well. It turned out okay in the end...

...The swordtail started tight circle swimming with the chunk at the hub. The swordtail was making fast circles, his body protecting the chunk from the attempts being made by the turtle to snatch it away.
I was so afraid the swordtail was going to disapear, or maybe half of it, into the turtle's chomping mouth. It was getting so tight, so close, flesh to flesh, so frantic!!! Yikes!! Amazing, fish body swirling, twisting, frantically making a shield out of its own bulk, using its side profile to cover/protect the chunk, flashing this way and that - the turtle very clumsy in comparison, but he made up for that with his really-big-mouth.
I was scared to the max, holding my breath, not able to breathe and at that same moment, as all was going into slow motion mode for me, unable to think what I should/could do to help the swordtail, my turtle changed; apparently it had become way to intense for him, too. He was chomping at, yet still missing that piece of salmon, but suddenly he appeared conscious of the live fish; he was doing some aquatic sidesteps, sort of, a double-take. Maybe he realized now that there were two entities - the swordtail and the salmon- at any rate, he made obvious efforts in his clumsy attempts to now be careful to not bite the swordtail. WoW! Amazing. He is a good turtle

. He lessened his charge a bit, the swordtail quit swirling and... my turtle simply took the piece of salmon from the swordtail precisely and carefully, rather matter of fact. Done deal.
Geeze -- I had witnessed my turtle's thought process in action. It was logical and fairly complex, and there was kindness, thrown in for the surprise icing on the cake.
