Question about my two bichirs

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mamapuff

Candiru
MFK Member
Mar 16, 2009
888
2
48
Austin, Texas
I got two senigals, my first venture into polys, back in January. They were about 2- 2 1/2 inches long and thinner than a pencil. I had them both in our 75 gallon with our loaches and discus, and I always saw the slightly larger of the two beat the hell out of the other one, and eventually it had no pectoral fins. I moved (what I call her) to my 20 gallon hospital where I was treating a discus and my deformed gourami. I left her there for about 2 months, until I felt she was completely healed, and thick enough for round two in the 75. I guess I never realized how much faster she was growing than the one that remained in the 75. He got more food than her! She ate a lot and never went hungry, but I power feed the 75 with tilapia, shrimp, krill, bloodworm, pellet, flake, and whatever else comes our way because of our loach shoal and our discus, among the weirdos that inhabit that tank. I never saw him without a fat tummy. Both got the same amount of water changes, but I did keep the hospital tank at a higher temp, only slightly by 2 degrees.

Now, she is roughly 5 1/2 -6 inches, and he is still around 4 1/2. She is much fatter though. I can tell her apart because of one of her old scars.

I guess my question is, do they vary in growth rates, just like people do? Sorry if it's a dumb question, like I said, my first round with them. I love these two to death though. Since I reintroduced them to each other, no fighting what so ever. Maybe he feels threatened because she's bigger? She's not holding grudges whatever the case, but rather staying with him wherever he swims. I love watching them hold on to a piece of shrimp that is too big for their mouths. Please share your knowledge and experience!
 
Quick answer is yes, they can vary quite a bit in growth rate from individual to individual. Of the 12 I have currently, 2 have taken off in the growth department and I had to remove them for fear of them actually eating the others, the big ones are almost 3x the size of the smaller ones. It all boils down to the genes of the particular fish, just like people. Now most of my poly's were the same size when they were placed in the tank and the two biggest senegals have out grown all but one endis.
 
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