Hi Fin, Red Banded Prawn Goby - Stonogobiops sp.
Size approx. 2.5"
Prawn Gobies are a group of Gobies that naturally live with Pistol Shrimp in the wild. The Goby acts as the lookout due to the shrimp having poor eyesight. The Goby will signal the shrimp with it's fins when it perceives danger - then they both will ZIP into safety! The shrimp busily works making a home for them both & will often crawl over & under the Goby without the Goby being phased a bit! I've seen different Prawn Gobies live peacefully together with one Pistol shrimp too! Though they do not need a Pistol Shrimp to be happy it is quite awesome to watch them do their thing. :c)