RTC's fighting? Is this one bitten??

Hi guys,

i was recently given 3 small rtc's about 2.5-3 inch. They were given to me by a friend that got them without knowing anything about them, anyway I put them i a 15g tank in order to get them a bit bigger and put them in a 105g were I'm growing a rtc x tsn hybrid that just broke the 13 inch mark. (Next will be straight to my 3000 gallon pond when I manage to re home my remaining kois)

I ' feeding hikari massivore delite pellets and occasionally shrimps.

that was exactly 25 five days ago and now all three of them are 6 inches or more, greater growth rate that I could imagine.

now to the problem:

I recently noticed some fights between them especially during feeding time, yesterday I got home and found one with redness on his dorsal fin and I thing it might has been bitten,

Im skeptical in starting moving them in the 105g as I fear that the hybrid might eat them but I dont want to loose any of them in fighting since my goal from the beginning was saving them

The hybrid is always hiding in its cave during the day, it only comes out after all the lights in the room are off, probably looking for pray all night. I have cut its food servings in halve so that the rtc's can catch up and get at least 8-9 inches so I can get them with him, currently feeding him 3-4 massivore pellets every second night.

even then Im guessing its gonna be two or three months before I need to move all of them to a bigger tank or the pond

Rtc's have shown some impressive growth rate, getting from 2,5 inch to 6 inches in less than a month!

On second look now, it seems that the bitten fin of the rtc is better now, hopefully it will heal completely soon

Ok, it really seems things are awfully tight for the 3 rtc's in the 15gallon, Im going to start moving them in the 125 gallon, going to move the first one tonight and the the rest every 3-4 days so I can keep an eye on water parameters since they eat like pigs and its going to be a huge addition to the bioload, hopefully the hybrid wont try anything funny...

Its hard keeping 3 rtcs in a 15gallon when feeding for growth, I have to test the water for ammonia and nitrites every 12 hours and do 50% water changes daily and some times twice a day just to keep nitrates under 40ppm!!

Unfortunatelly though it was the only cycled tank I had available when I got them, It was a hard month to keep the water good and get them to triple their size.

I'll keep you posted on how it goes,

I got the feeling that the need for transition in the pond is going to be a lot sooner that I expected..

Here are some pics before I start moving them, the first one is 35 days ago when I first got them






I'll take some pics of the pond also

I dont have to construct a pond, I already have it but I need to rehouse my koi first, I already gave away all my Tilapias and carps to a guy that deals with aquaponics, I am thinking of keeping some of my big koi though since I believe that at over 1.5' will be safe for some time.