Thank you for the replies, I would not expect for it to cause problems. I however do not like to put things in a tank where there is not enough room for them to be healthy. I struggle with that because there are so many things I want but can not have them due to my small tank size. Every time I see a Mandarin I drool, but know I can not have one because I refuse to starve it. To have it knowing I can not provide for its needs. AHHH Need a bigger tank! Any way, is the 55 gal rec. for the Diamond goby correct?
Thanks,
Jennifer