thanks for the interest everyone,
i have a few other gobies which i cant identify either?
the colourful goby also turns completly black with a white band along the top of its body when stressed. Its fins are seperated at the bottom but dont have a good photo yet of it with all its fins out but will try and get a good pic. Its territorial and both have set up camp on either side of the tank in their own rock caves.
This fish is a eastern threefin and they love seaweed and saltwater plants in the tank.
The picture below is a common eastern sand goby (i think) and is extremely easy to keep, they love feeder fish and anything algae.
the picture below is an annoying and extremely stupid toadfish. we have recently gotton rid of them, those who live in australia would know them, they are a pest yet extremely colourful and we thought we would see what they are like, but they cause soo much trouble.
we also have blackfish and starfish and anemenies and urchins and they all live together heaps well. all australian.