Y-bar Shrimp Goby, Cryptocentrus fasciatus

The Y-Bar, or Blue Fin Shrimp goby, is a beautiful fish covered in shimmering sapphire spots, especially on its fins. Its contrasting body is a deep coffee color with light cream stripes along its back. Depending on its mood it can lighten or darken its color at will, from near black to deep pink to bright yellow. Males and females are visually identical. It grows to 4 inches; we recommend an aquarium of at least 10 gallons.

Shrimp gobies go by many names including prawn gobies and watchman gobies. They may be kept on their own just fine in an aquarium; however it is especially fascinating to pair them with a pistol shrimp. The goby will form a strong bond with the shrimp and mutually benefit each other. The hard-working shrimp will excavate a burrow under the sand for them to live in, consisting of several tunnels, entrances and exits. The sharp-eyed goby stands guard at one of the entrances and keeps an eye out for threats. As the shrimp goes about maintaining the tunnel and searching for food it keeps one antennae on the goby. If the goby sees danger it flicks its tail, signaling to the shrimp to make a hasty retreat. The goby may follow quickly if the danger is threatening enough. At nighttime or when a tunnel is not being used the shrimp will block it off with shells and small rocks. It is important to provide deep sand of at least three inches and plenty of shells and crushed coral of various sizes so the shrimp has enough building material to create a stable dwelling. Rocks should be placed on the aquarium glass and sand poured around them to eliminate the danger of a cave-in when the shrimp excavates.

We recommend a shrimp and its goby partner be added to the aquarium at the same time; it is best if they are placed in a net together and gently lowered to the aquarium bottom. There are three common types of pistol shrimp that pair with gobies; the Tiger, Fine Striped, and Candy Cane pistol shrimp.

Unless they are a pair shrimp gobies tend to be quite territorial with each other- if more than one is to be kept in the same aquarium we recommend space enough to accommodate at least 24 inches between burrows. They are typically peaceful with all other types of fish.

We recommend the tank be securely covered as sand dwelling gobies may be prone to jumping from open top aquaria.

Sand gobies are primarily carnivores and their diet should include plenty of high quality meaty items, marine algae, Spirulina, and frozen Mysis shrimp. It is preferable to feed more than once a day and to let some food land on the bottom of the aquarium. Frozen food is best, however in time they usually learn to eat dry foods.

For further information on keeping Marine fish please follow this link below

https://ornamentalfish.org/what-we-do/advice-information/care-sheets/caresheets-marine-fish/