On a break. I broke down the third f1 L173 grow tank, a 20L. I moved all the fish to other tanks. I also made a very rare mistake. I removed 3 aets of fish from the tank. 20 fish at 1.75 - 2,25 in. TL, 12 at 1.5+ - 1.75 and 4 smaller fish 1+ -1.5. The mistakes what in where I put the 4 smallest.
I put them into the right half of a 33L with Budrovcan 236 fry. I got lucky with this mistake unlike the last time I made one similar. The 19 L236 in that tank are all tiny- about .5 inches. The 4 L173 are all much larger (about 1 in.) and will be easy to find and remove. But it will require breaking down that half of the tank completely. I can wait a bit to do this but not too long because the 236 grow faster.
Young 236 and 173 can be impossible to tell apart. If it weren't for the size difference here I would be way be up a creek without a paddle. Back in 2016 I brought L450s and L236 as a room seller at CatCon. I was exhausted by the time I arrived and got it all up to my room and I still had about 8 tanks to set up and fish to unbag. I was almost done when I mistakenly dumped the bag of 450s into the tank with the 236s. I was almost lost until I remembered that two of the best catfish people I know were down the hall. Barbie F and Dale E. rescued me. Barbie came down to my room where we put all the fish into a plastic shoe box and took then back to her room. She and Dale then sorted out about 30 fish in a matter of minutes. i would have needed hours and still have made mistakes.
I am normally very good about not allowing species to mix. In fact all my pleco tanks hold only one species of pleco and a few also have snails. I keep no other fish with them. In 15 years this was my second slip.
Here is a poor pic of a group of smaller Bidrovcan line 236. These fish are 1.5 - <1.,75 inch.
So far I have counted 74 Budrivcan 236 offspring and 116 F1 173, I still have the wild caught 173 breeder tank to tackle. Best guess is between 30 and 50 in there. Then I have two halves of a 125 used for growing from the tank bred 173 and 236 groups, plus the breeder tanks for both. The 125 should have about 45- 50 fish and the breeder tanks could be another 50 -75. I have no idea for the 75 with the 236 but I know the 33L with the 173s is packed. This will take most of the next week to get done.