I'm looking for a groundcover (don't know a better way to say it) plant that could go into my goldfish tank. I know goldfish and planted tanks often don't get along but I would still like to have something in there. So I'm looking for suggestions on a plant that can be planted directly on the gravel, is hardy enough to stand up to goldfish, and will grow accross the bottom of my tank instead of up. Is there any plant out there like this? I'll still have fake plants and ornaments in the tank as well for vertical coverage.
On a similar subject, any suggestions for plants that could go into my 20 gallon tropical tank would be appreciated as well. I already have three plants in there but I would like to trim them back and possibly remove one so any suggestions are again appreciated. I have attached pictures of the plants in my 20 gallon tank. I don't really know what they're called. I do have a bristlenose plecostomus and snail in there so it would have to be a plant they wouldn't eat either.
Hard to tell from the photos but I'd guess your current plants are Vallisneria, Ludwigia, and Rotala. How about Java moss for a "carpet" -- its one of the less tasty plants for plant-eating fish. Some of the other "carpet" plants like Hemianthus really need supplemental CO2 and high light intensity to keep them in carpet mode ... otherwise they grow tall.