I got a...

[Fish00]

I bought a dwarf dragon gobie or so it was labeled, but i'm not convinced.
what is it?

 

[ryan]

There are two species of Dragon Gobie, Gobioides broussonetti and Gobioides peruanas, the later being the FW fish with Gobioides broussonetti requiring Brackish water to survive. The FW fish can be told apart from the other by its lack of vertiacl dark bands. Both are filter feeders and the largest they can normally manage is fry, feed small live foods like Daphnia and Bloodworm.

EDIT: Just spotted the Dwarf part! CFC is right.

 

[CFC]

Rhinogobius wui is often sold as dwarf dragon gobies http/www.aquazoo.co.uk/page.cfm/type=allfish/PageID=126

 

[SirMinion]

We bought some new fish labled as Dwarf dragon Gobies this week too, and they did indeed turn out to be rhinogobius wui

Have a look here - Is that what you have?

 

[Fish00]

Yes, indeed that they are. but what water do they require

 

[CFC]

Rhinogobius wui comes from temperate areas and wont do well long term in temperatures above 21c (71f). The pH should be in the mid to low 7s (7-7.5) and the hardness not below 10dGH. Make sure the tank has good aeration and a mild current supplied by a powerhead or filter. A sand substrate with large flat rocks or pieces of slate make the ideal tank furniture.

 

[Fish00]

All exept the tank & temp.