Common name: Silverspot shrimpgoby

General information

The Filamented Sandgoby, Ctenogobiops crocineus, is a small and colorful goby species that is a charming addition to any reef or fish-only aquarium. It is known for its distinctive yellow body and blue to purple stripes, which make it a visually appealing species. This goby is also recognized for its symbiotic relationship with snapping shrimps, which adds an interesting behavioral aspect to observe in captivity.

Care

Ctenogobiops crocineus is a hardy species that adapts well to aquarium life. It requires a tank with a sandy substrate to exhibit its natural burrowing behavior. The aquarium should also have ample rockwork or decorations to provide hiding places. This goby is peaceful and can be kept with a variety of tank mates, but it is best to avoid aggressive or overly large fish that may intimidate or harm it. A varied diet of meaty foods and high-quality prepared foods will help maintain its health and coloration.

Reproduction

In the home aquarium, breeding Ctenogobiops crocineus can be a challenge. These gobies are not commonly bred in captivity, and little is known about their specific breeding behaviors. However, like many gobies, they are likely to form monogamous pairs and spawn within the safety of their burrows.

Symbiosis

One of the most fascinating aspects of the Filamented Sandgoby is its symbiotic relationship with certain species of snapping shrimps, such as those from the genus Alpheus. In this mutualistic relationship, the shrimp digs and maintains a burrow that both the shrimp and the goby inhabit. The goby keeps a lookout for predators, while the nearly blind shrimp provides a safe home. This behavior can be replicated in the aquarium if both species are introduced together.

Habitat

Ctenogobiops crocineus is found in the Indo-Pacific region, from the Red Sea and East Africa to the central Pacific. It inhabits sandy and rubble substrates in lagoons and coastal reefs, often at depths where it can easily burrow. In the wild, it is typically found at depths ranging from shallow waters to about 40 meters.