Symbiotic gobies and partner gobies
"Most interesting: Symbiotic gobies with partner crabs!"
Coral gobies (Gobiodon) on the other hand live as territorial creatures in the hard corals. They defend the corals against attackers and also use this for spawning. So a small piece of coral is gnawed off and the eggs are laid here.
Specially popular and interesting to watch are the cohabitation between the invertebrates. The guardian gobies live together with a partner-pistol shrimp (Alpheus). So the pistol shrimp builds passageways (upto 1m) und piles up the sand outside. The goby guards the entrance of the hole and communicates with the crabs. In case of danger it takes protection in the passageways and feeds on microorganisms which gets out with the sand. This partnership is one of the most interesting things to be looked at: Gobies with partner crabs are definitely an eye-catcher in the nano-aquarium.
Feeding the gobies
Regarding feed, gobies are usually undemanding and can be fed with common food varieties. Artemia, Mysis, Goldpods and different granulated food are gladly accepted. Often the gobies are also fed the naturally existing zooplankton in the aquarium.
Gobies can be very useful in the aquarium. The goby Amblygobius phalaena for example tirelessly dredges through the sand and thus ensures that this beautiful sand remains white. Due to the continuous movement it is a good precaution against Cyano bacteris and plagues on the aquarium gravel and can be used in the existing plagues.