I think they just call them rams horn snails. They eat some of my chain sward tips and I just don't really like to see them. I think low pH (under 7) keeps them from being able to calcify their shell. Fact check me on it.
Trumpets are fine with me. I added a bunch to my tank to keep my soil churned up a little. I don't see them much in my system and haven't seen damage I could pin on them. I have a couple Madagascar lace plants that seem like they would be showing it if snails had been eating them.
I keep 2 assassin snails in my 2 gallon that has rams horns. They kill them slowly. Keep them out of plague proportions. They took out what looked like all the snails in one of the tanks after 6 months. I had an outdoor 30 gallon tank for over a year and they (the two of them) were never able to get all the snails.
You may want to put a Pea Puffer or some more aggressive snail carnivore in there while you are getting stabilized. Trade it in later. I think a Loach might cause havoc on newly rooting plants but someone else might know better than me there. I had some of those in my shrimp tank that did just disappear on their own, so who know for sure.
I love having my shrimp. I Had Amano's breed and almost got some hatch out. Bad vacation timing. I havent had much luck with the Crystal's. I like them more, but I think they need more love than I have to give. My Cherry shrimp live pretty much anywhere and are cool to watch. I got them from a guy on craigslist about 3 years ago. I got some dark blue ones and bright red. Put them in the same tank. Now I have a couple purple almost black ones, lots of tan to clear, some solid red. When I had seahorses it was easy to trap the less attractive shrimp and feed them off. Now that I dont have anything that eats them, it bothers me to catch them because I am not comfortable killing them just for the sake of it.
I had two pair of rams in my 120. I have always loved the look of them. When they paired off they got really aggressive. They seemed to need about 4 Sqft to feel good about things. They tore out small sections of my ground cover to spawn. They laid eggs twice and ate them on day 3. I put them in my 7 gallon shrimp tank and they let the fry hatch. I had enough daphnia and some pods in there that the fry fed off of that. I didn't put much focus on raising out the fry. Many died and I ended up with just one that was about the size of a dime. Cant remember if I sold him or what. The rams ate my shrimp when they could catch them. I eventually traded them in because they were just too aggressive. Maybe just dont get a male and female?
I mentioned earlier that my discus would slaughter my shrimp when they could catch them so the shrimp went into hiding. Now that I have only cardinal tetras the shrimp are coming back. The tetras do go trolling for small shrimp, but definitely not taking all of them out.
I have had freshwater fish since I was 12 and had opportunities to keep almost everything I have wanted. I use them more as decorations now. I really like small schooling fish. If you are into freshwater fish I would say to go for that. Amano's get big enough that I have been able to keep them with other fish. Feeder shrimp seem to hold their own. If you are way into cichlids then probably no shrimp. They might be able to eradicate a shrimp (and snail) population.
