not worried about overstocking. its 6.6, but it's also 23" long. compare that to a 10 gal which is 20" and a 20 which is 24".
the dwarf rasboras are maybe 1/4 inch and the dwarf gouramis & otos maybe 3/4 inch. add it all up it's right around 8 1/4 inches of fish. digsy you clearly dont know of dwarf rasboras. they're the ideal nano fish, and people put a dozen in 1 gal setups with success.
also, the fish live in different parts of the tank so they're not competing for space. bottom, middle, top - one in each.
after 24 hrs, no problems with gouramis and shrimp. i didnt think there would be, but it was a good thing to double check. these thick-lipped gouramis also pick at algae, similar feeding behavior to the pearl gouramis in the 55 gal.
btw, singapore shrimp is also known as asian fan shrimp or bamboo shrimp
never had an oto starve, they've always been greedy feeders w/ pellets. their size does show how much they eat. they should have slightly rounded mid sections.
i'll put pics up in the photo section soon.
other tank info:
light 15w soon to be 24w (fedex tracker says 2 more days)
dosing: excel and florapride
filter: HOB, bubble wand
plants: dwarf baby tears, microsword, 3 types of crypts, chainsword, dwarf sag, Aponogeton boivinianus (dont know common name), onion plant, tiger lotus
Smoke 'em if you got 'em.
20g Tall Low Tech Planted