Re: 300gal paludarium project
It would really cool to have a fish that could take advantage of the emersed space above the water.
I've definitely thought of archers - I think they would look awesome in this setup. Unfortunately, most of the commonly available species do best under brackish conditions. There are some freshwater variants and populations but they are hard to find. I'm keeping my eyes open.
Another cool option would be splashing tetras. These guys jump out of the water and lay their eggs on overhanding leaves and the male then flicks droplets of water onto them to keep them moist until they hatch. Very cool, but I'm a little worried they might be a little too small to hang with my other fish, and they also don't seem to be commonly available in the US.