Crenuchus spilurus, ( sail fin tetras ) my journey...

So I'm not seeing any white edges on the fins... so it's looking like I have a group of females, or maybe immature enough, no color yet on the dorsals???

little blip of their tank, & eating last night here...

 
well these guys all love blood worms... shrimp cocktail tonight... even got to see a jumbo cardinal tetra eat a whole bloodworm...
looks like it's going to burst, but got the whole thing down...
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here even a jumbo Amano shrimp is eating a blood worm
 
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I take back the "lack of white edges to the dorsal comment" above... I think I have one that doesn't hang out in the shoal of mixed tetras, that may be a male... it seems to hang deeper into the root tangles, or I saw it checking out the new resin hollow log, I just added , that the coffeefola is planted out of it...
 
these guys are growing rapidly... this is one of the bigger ones, just above a mature palmeri, at 1st light this morning
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sail fins gobbling up flake food this morning, so feeding them has been no problem
 
something for everyone.... this morning, each tank got a staple food mix of a little Bug Bites, a little Ultra Fresh Micro Pellets, and a little color / algae mix flake food I use, and the sail fins aggressively ate all 4 they are growing, and competing with the rest of the tetras ( they do give the 2 mature palmeri, and the male raccoon some respect, but there are no negative interactions with either of those 3 fish, or with the mature Zebra Lace Angel, or Spotted Silver Dollar, that are also in the tank... all in all, they fit nicely into this tank...
 
I noticed one of the larger sail fins, was rippling it's dorsal fin, like it was showing off, this morning, before feeding time... assume that one is a juvenal male...
 
I haven't upgraded on these guys for a while... this tank is hard to take pictures, but I wanted to try, as I've been away over the weekend, and they seemed to have grown since I last looked at them... I believe there are still 5 in this tank, that are thriving...
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did a little close looking after feeding this morning... I have a big beautiful sail fin male, that has taken over one of the hollow logs... in a hollow log, in this shaded tank, I could only see him with a flashlight, but he's more colorful, right now, than the others, which are too young, or are female... no idea where that will go, with owning the hollow log, but he seemed to be trying to keep the others out... my group of them seems to be holding at 4 or 5, and they seem to be doing well...
 
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