Friday Tank Update

The Yellow Watchman Goby generally perches smugly on rocks or sand, balancing on its ventral fin, perpetually frowning, until some food floats or crawls on by.
Lately, as it has become more acclimated to my tank (and much healthier than it was at the fish store, I might add*), it will venture out into the Fire Goby's domain.
The Fire Goby flicks its dorsal fin to show local dominance, but since I've found both fish in the filter chambers**, it's unclear who is dominating whom...
Remember to select 720p, I don't know why YouTube changed it up so HD isn't retained.


You can see that just swimming in place is much more of an effort for the Watchman Goby.
They are really built for perching.

*Why is that said? "I might add" always follows something that was, in fact, added.
You're in the conversation, you're not conversing about how you might converse if you weren't presently conversing.
English is fucking weird, I might add.

**These are chambers behind the wall of the tank, housing active carbon, sponges, the pump, and the water heater. If a fish is back here, it was usually chased to the surface and jumped out. It is a bitch to get them back into the main tank.