Salty Q&A: How Often Should Your Fish Fast?

Question I’ve been told that it’s a good idea to avoid feeding aquarium fish on occasion, for example once every week or once every other week. I guess this stands to reason because fish in nature can’t always get a meal. Do you agree with this, and if so, how frequently do you recommend doing … [Read More]

The Reef Aquarium After Hours: Four Reasons to Keep That Flashlight Handy

Anyone who has done any night diving knows that nighttime activity on coral reefs is very, very different from what goes on there during the day. A dramatic “changing of the guard” occurs, with diurnal fish seeking refuge in the reef and nocturnal predators and planktivores taking dominion. Parrotfishes, wedged in caves or crevices, cloak … [Read More]

The Pyramid Butterflyfish: A Hardy, Reef-Safe Chaetodontid

While many of the butterflyfishes are challenging—if not outright impossible—to maintain in captivity for one reason or another, there are various species that go against the grain and make excellent or reasonably solid aquarium candidates. Among the “reasonably solid” species is the pyramid butterflyfish (Hemitaurichthys polylepis)—a generally hardy, adaptable, not-too-difficult-to-feed, and beautiful chaetodontid from the … [Read More]

Go Ahead and Buy a (Captive-Bred) Banggai Cardinalfish!

Being fascinating to behold, very hardy and adaptable to aquarium fare, an exceptional choice for reef systems, suitable for modest-sized aquariums, and even easy to breed in captivity, the Banggai, or Kaudern’s, cardinalfish (Pterapogon kauderni) is a lot like Mary Poppins—practically perfect in every way. Physical traits P. kauderni is silver overall with tiny white … [Read More]

Genicanthus lamarck: An Elegant, Reef-Safe Angelfish

Owing to the natural tendency of many species to nip at or outright consume sessile invertebrates, angelfishes are often of dubious suitability when it comes to their inclusion in reef aquariums. However, at least one angelfish—Lamarck’s angel (Genicanthus lamarck)—is generally very well behaved in reef systems and quite attractive to boot. Physical traits G. lamarck … [Read More]

Tinker’s Butterflyfish: Beautiful, Hardy, and Way Beyond My Wages

Novice marine aquarium hobbyists—especially those making the transition from freshwater to saltwater fishkeeping—commonly experience “sticker shock” when they see the prices of many marine species offered in the trade. After all, when you’re accustomed to spending only a few dollars to a few tens of dollars for freshwater fishes, even the least expensive marine fish … [Read More]

X. auromarginatus: A Well-Mannered, Reef-Friendly Triggerfish

As I alluded in an earlier post about the Niger triggerfish (Odonus niger), triggers in general aren’t usually among the first species that come to mind when one is seeking an aquarium specimen with a peaceful disposition. Certainly as far as reef-friendliness is concerned, most of us would probably put triggers as a group somewhere … [Read More]

5 Factors Leading to Long-Term Dietary Deficiencies in Marine Aquarium Fish

The occasional loss of fish is an unavoidable reality of marine aquarium keeping. Fish have a finite lifespan, and some are destined to pass away in captivity, even when they’re provided the best possible environment and care. But more often than many hobbyists care to admit, specimens die not because their proverbial number was really … [Read More]