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Since these fish are sand sifters, internal parasites can be a common problem. A positive identification of intestinal worms would require a microscopic examination of its fecal matter, or the liver, intestines, or abdominal cavity of deceased fish. Obviously, this is beyond the capabilities of most hobbyists, so it is best to presume the fish has intestinal worms. This presumption is not without merit, however, as an estimated 75 - 85% of imported marine fish have intestinal worms (Bassleer, 1996). The induced stress from poor shipping practices exacerbates this ailment, likely leading to the death of the animal. Normal signs indicative of internal worm infestations are: weight loss while a healthy appetite is present, scraping or flashing against rockwork or sand, and finally, loss of appetite occurring just prior to death. Treatment for internal worms must be administered to a fish that is eating. Live foods are best, as this allows "gut loading," which is the practice of feeding live foods additional vitamins or medicines just prior to feeding. If live foods are unavailable, the next best option is to use freeze-dried foods. The dry food will soak up and retain a majority of the medicine. Piperazine is a good first choice for treatment. Add 250mg per 100g of food each day for a period of 10 days. Praziquantel or lecamisole can be used as a second choice, with the same dosage and time frame. Niclosamide can also be used at 500mg per 100g of food for 10 days (Bassleer, 1996).
It is highly advisable to keep these gobies as pairs in the home aquarium as single individuals are typically noted to succumb to an early death. Spawning of paired individuals is not uncommon in the home aquarium. The eggs, usually between 1000 and 2000 eggs, will be attached to the roof of the burrow. The female will stay in the burrow with the eggs until they hatch, reportedly from one to four days for V. strigata (Michael, Coral Realm) and three weeks for V. sexguttata (Baensch, 1994), while the male remains outside the cave, presumably guarding the female and the eggs from danger. When the eggs hatch the male will seal the burrow entrance with the female inside until nightfall, at which time the male opens the burrow door and along with the female, herd the fry into the open water column (Baensch, 1994).
The Sand Sifting gobies certainly live up to their given name, and in doing so can make an interesting addition to some home aquariums. Their unique eating behavior is certainly something not seen too often, and possibly thankfully so. The eating behavior can become terribly destructive when the fish is placed into the wrong setting. Ignoring the advice given above will yield results that will make for both unhappy hobbyists and corals.