chalk bass aggressive? i have had them, always my most skiddish push over fish. i guess with masked gobies though what does that mean right?
just my opinion, if you are going to do a biotope try get some of the more unusual fish. in my florida fowlr, (not a nano) i have:
1 french angel -(okay pretty common)
1 juvie pudding wife wrasse -awesome fish, but not nano
1 sailfin blenny - nano-able
1 goldline blenny - nano-able
1 sharpnose puffer
1 juvie porkfish
1 juvie high hat
1 red lizardfish (juvie)
1 fish me and my brother call the "orange spotted damsel", when I checked it out it didnt have a common name, (or one that was in that book), so that is what we came up with (it has an orange spot), and forgot the scientific name - nano-able
1 the seaweed blenny that always gets to stick around despite my constant fiddling with stock lists
1 oddscale cardinal fish - pending, he is on the wish list - nano-able
1 lancer dragonet - next fish i will add, just trying to do more research
the variety is cool, and while they are not rare fish by any means, they are unusual to some degree, just some ideas. Would like to read a thread about someone who owns a 3line basslet
here is google images link to a 3line basslet:
http://tbn2.google.com/images?q=tbn:AF0Wr_...trilineatum.jpgand a juvie puddingwife for the fun of it:
http://www.pbcrrt.org/Quiz/PB0194bH.jpg(not mine - neither are)