Another option would be to use the tank as a quarantine/hospital tank. It's always handy to have a small empty tank around. I really can't think of much that would be happy in a 4g.
guppies
betta
adf
ghost shrimp
maybe just maybe 3 khuli loaches but you'll never see them
snails
you could do a well planted 4 G with ghost shrimp and snails.
Here's a good thread on small species fish. I don't know if any of them will really be ok in a 4g but you might enjoy looking at it.
http/www.fishforums.net/index.php?showto...gopid=1060542&#
http/www.aqualandpetsplus.com/Oddball,%20Mini-Fishes.htm
guppies
betta
adf
ghost shrimp
maybe just maybe 3 khuli loaches but you'll never see them
snails
you could do a well planted 4 G with ghost shrimp and snails.
Here's a good thread on small species fish. I don't know if any of them will really be ok in a 4g but you might enjoy looking at it.
http/www.fishforums.net/index.php?showto...gopid=1060542&#
http/www.aqualandpetsplus.com/Oddball,%20Mini-Fishes.htm