Most interesting species

[eitakppurk]

Hey guys, I'm starting a new tank up when I get home and I want to do either a species only or one pair tank. I'm interested in getting a new species (new to me, that is) and was wondering, what species do you all think is the most interesting to watch (unique nesting, spawning, fry rearing behaviors)? Right now I'm leaning towards a lamprologus pulcher group, but I haven't made up my mind yet and I'd love to hear what your favorite, most entertaining fish are. Thanks!

[mibwb]

Boy, that's a BIG question to ask.....let the suggestions begin....

[Regalblue]

Can't go wrong with a pair of Convicts. 

IMO everyone should spawn them at least once & they're definitely an interesting fish to watch.

[Ron]

Atlantic Bluefin Tuna have complex migration habits that are pretty interesting and do well as a school of their own.

... What size is this tank? Knowing the size might help channel only reasonable suggestions. 

[danielratti]

Yeah do blue fin tuna. Once you get sick of them make some dinner.

[Sean]

I've gotta say my favorite things I ever tried to breed were Chinese Vermilion gobies. Their behavior was awesome to watch and their breeding colors were stunning. They are also cool because they were only recently discovered (2010 I believe) I'll attach a pic. Crayfish are another fun one, especially since you can get the blues, oranges, whites and normal crayfish. Any type of shell dwellers are pretty interesting to watch. (Gold Ocellatus were my favorite to watch). Christmas fulus were another favorite because of the male's breeding colors. I've always loved Cyathopharynx furcifer/foai but have never bred them. Another stunning fish.

[kodyboy]

A group of shellies is fun to watch as is a colony of brichardi with multiple generations.
Watchman gobies and pistol shrimp are fun to watch together.
Rainbowfish makes showing off with natural sunlight hitting them are amazing.

[mibwb]

Atlantic Bluefin Tuna have complex migration habits that are pretty interesting and do well as a school of their own.

So,that's what you keep in that big tank..