How well do aquatic frogs adapt??

Ottos eat algae, but are not what you would refer to as a bottom feeder as they won't go for pellets or flakes that the other fish miss out on. They also don't tend to really hang out on the bottom of the tank. Mine preferred the leaves of plants, top of driftwood and walls about half way to all the way up the aquarium.
 
All right. Now I dont wanna go overstocking my tank, but now I have 1 betta, 1 molly, and 6 lemon tetras.I want to add in some Kuhli loaches, and some sort of algae eater. I was thinking ottocats, but those need to be kept in groups, and I only have a 20L. So I was thinking Chinese algae eaters, but those get really big! What non-aggressive algae eaters, can I keep in my tank?( without overstocking it)

Thanks!
 
Bristlenose pleco. They max out around 4-5 inches, eat algae, but do require driftwood and veggie supplementation. I have 2 (a male and female) in a 29g with my gambusia, electric blue rams, and ghost shrimp. Great fish, tons of character. They may chase shrimp away from food and algae wafers, but they are not aggressive toward tankmates.
 
I also like rubber lip plecos for algae cleanup in smaller tanks. They are like the bristlenose in size, but do not require driftwood in their diet. Another option is a group of nerite snails, which come in some pretty cool varieties.
 
This thread is a little older, but due to coincidence just happened to pop up today that has a good list of small plecos.

http://www.aquariacentral.com/forums/threads/the-30-smallest-plecos-list.275385/

It doesn't include the rubber lips though, but that's probs cuz PetSmart seems to always get a mix of species. But I'm pretty sure this is the most common one they get in.
http://www.planetcatfish.com/common/species.php?species_id=318

Check out the other Chaetostoma Planet Catfish as well. There are a lot of different species that have a range of sizes.
 
Clown plecos stay small, but in my experience, they aren't very good for algae control. Rubber lip and bristlenose are better, based on my experience. My BNs just happen to be way more active than the rubber lip (which is in a different tank), which is why I tend to favor them.
 
Ok thanks. Lots of info here! I will try one or two of these. Thanks!:)
 
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