Oh yea they spawn - within the first week I got them (same with the Cherrys). I started with 8 Crystals (I think 3 adults, 5 babies) and six Cherrys. I've given away 16 shrimp, and probably have a hundred in there. The Crystals at first outbred the Cherrys. I raised the temp a bit and stopped adding Indian Almond leaves, and the Crystals aren't breeding as much now. I am a stress case with giving/selling my pets, and would rather they just not breed.
LOL JanS ! I would much prefer that to the "let it snow" version, personally. I'm tired of losing my vacation days to snow/ice days in an area of the country I was told "it never snows" before moving here. Somebody, err, everybody has selective memories!!!
The biggest fish I have in the tank I was thinking of is a Neon and a Threadfin Rainbow. They couldn't even get a shrimp leg in their mouth. I know better than to put them with the Angels. They mercilessly stalk shrimp.
Well, guppies can eat shrimp... they just chomp em in half! There's not a fish I trust, except maybe an Otto..but still not sure.
I was going to go but backed out. It's both very expensive to kennel my 3 big dogs and I'm a basket case when I do it. I first had planned to just drive up for the day, but then thought the traffic would be bad, and it wouldn't be feasible.
Capt, Amanos are larger than the Cherry Shrimp and the Crystal Reds, however, a person on another board lost his ghost shrimp to some guppies that were perhaps the same size as the guppies! Endlers are so similar to guppies, I would consider them the same category.
However, my opinions are solely my own in that I'm personally not comfortable with predation. I don't feed live foods, either. Therefore, I don't like any possibility of the shrimp being eaten -- and if there are adult shrimp, there will be baby shrimp (Amanos are harder to breed than the Cherries and the Crystals). Others wouldn't have the same concerns as I do...