hey guys i need some selections on brackish water fish

try aqadvisor.com for freshwater.

As far as brackish goes, check with your LFS to see what they have. Don't plan to have all kinds of exotic and expensive fish, when you can't get them locally. Most sites that seel bracksih fish want tons for shipping, so it's better to order through your local fish store.

The best begginer fish for low salinity brackish are mollies and bumblebee gobies.

http://badmanstropicalfish.com/brackish/brackish.html

Click to expand...

As one of the folk who contributed to the creation of that section, there were several of us back in the day - I think the introduction and ecotype expansions are good, but I strongly disagreed with the stocking even that long ago. Personally I would not myself suggest most of the suggestions made by the owner of that site, and would not set such tanks myself. The one exception I would make is that I would and have set mixed tanks with F-8 puffers and bumblebee gobies. They tend to ignore the other species and the BBGs clean up after the F-8 without seeming to be in danger of being killed or eaten themselves.

Suggestions for GSPs and for Ceylons are things that I would coinsider poor to awful. IMHO and IME,both those are not fish for tank mates and are all too often under-housed seriously - along with being overfed. Neither situation is good for the fish.

In a 30 tall like yours, I would not do more than a couple pairs of BBgs with a single F-8. In a 30 long I would be much more comfortable with 2 F8s and might allow some BBG offspring to stay in the tank should they survive. We are talking about a 20-year tank setup there - to me there is no point in setting that without a good margin of safety from the extra swimming space and water volume. Fort short-lived fish, it is fine to set a short-life tank. For long-life fish, why cut corners? you get grace periods by having more flexibility in upkeep schedules and the pay-off in having a specimen who will outlive most dogs.
http://www.thepufferforum.com/forum/library/puffers-in-focus/fig8/

Puffers really prefer a longer footprint, so treat it as a 15g, which would be great for what I suggested above or how about some dwarf puffers They're little, so they wouldn't mind the smaller footprint.

It's going to be difficult to get light down to live plants from 2".

Look here for lots of BW info: http://homepage.mac.com/nmonks/Projects/brackishfaq.html

I still think that would make a great tank for DPs: http://www.thepufferforum.com/forum/library/puffers-in-focus/dwarfpuffercare/
http://www.thepufferforum.com/forum...rinotetraodon-travancoricus-the-dwarf-puffer/