Isochrysis: The Microalgal Reef Aquarium Superfood


A golden marine phytoflagellate, Isochrysis (sometimes referred to by aquarists simply as “Iso”) is classified as: Prymnesiophyta (Phylum); Prymnesiophyceae (Class); Isochrysidales (Order); Isochrysidaceae (Family); Isochrysis (Genus). The genus is comprised of marine, free-living, unicellular flagellate haptophytes.

Getting Your Greens: The Benefits of Feeding Live Nannochloropsis


Most of us want—and should want—our aquarium systems to more or less function ecologically in a way that resembles natural marine environments. Probably the most critical aspect of this is establishing a naturalistic food web. Unicellular, free-living, perpetually suspended algae (i.e. phytoplankton) account for a great deal of primary productivity in areas over or close … Continue reading Getting Your Greens: The Benefits of Feeding Live Nannochloropsis

A Look at the Aiptasia-Eating Filefish (Acreichthys tomentosus)


Nuisance algae is such a common irritant to marine aquarists that any mention of the words “aquarium plague” can immediately bring to mind visages of brown films and stringy green stuff. There are, however, some animal pest species that can quickly reach plague proportions in population size and create a crisis in terms of aggression/predation … Continue reading A Look at the Aiptasia-Eating Filefish (Acreichthys tomentosus)

Feeding Your Hungry Pods


Marine aquarists are really attempting to accomplish several goals when introducing copepods to their systems. These undoubtedly include elimination of detritus, controlling nuisance algae and providing excellent nutrition for countless reef fish and invertebrate species. But the general aim, of course, is to create a more dynamic and balanced captive ecosystem. After all, copepods are … Continue reading Feeding Your Hungry Pods

A Look at the Harlequin Shrimp


It is probably safe to say that the majority of aquarists (especially marine aquarists) are initially awestruck by the visual impact that a well-maintained aquarium can create. While they are certainly attracted to the bright colors that so many reef animals bear, they may also find themselves fascinated by the unusual behaviors that these creatures … Continue reading A Look at the Harlequin Shrimp

Utilizing the Trochus Snail (Trochus spp.)


Algae, of course, is not an inherently bad thing; without it, the natural world could not exist as we know it. However, there are many types of algae that readily grow in plague proportions under certain environmental conditions. Imbalances of nutrient levels (whether in nature or in the home aquarium) can quickly result in blooms … Continue reading Utilizing the Trochus Snail (Trochus spp.)

Bizarre and Beautiful: The Lined Seahorse (Hippocampus erectus)


Marine aquarists have always been fascinated with seahorses. These strange animals do make for interesting aquarium subjects. With their erect posture, rigid body, prehensile tail and their odd but clearly deliberate movement, they are unlike all other fishes. However, not all types of marine aquaria are right for seahorses. And, not all seahorse species have … Continue reading Bizarre and Beautiful: The Lined Seahorse (Hippocampus erectus)

Ulva spp. Seaweeds: The Refugium Powerhouses


Virtually all marine aquaria have fish residing in them. And fish must be fed. Which is fine, because most hobbyists enjoy feeding their animals and do so quite generously. The result, however, is a whole lot of fish waste. These waste products are mineralized (that is, broken down) through biological processes into simple compounds such … Continue reading Ulva spp. Seaweeds: The Refugium Powerhouses

Petite and Pretty: A Look at the Neon Goby (Elacatinus spp.)


If there was ever a group of fishes that was just about perfect for keeping in marine aquaria it is the neon gobies. These creatures are small, colorful, active and carry out some interesting and rather valuable duties. In addition to all that, they are extremely hardy and easy to care for. The common name … Continue reading Petite and Pretty: A Look at the Neon Goby (Elacatinus spp.)

An Overview of the Atlantic Sea Nettle (Chrysaora quinquecirrha)


It is a bit of a fortune to jellyfish enthusiasts that one of the most attractive aquarium species, the Atlantic sea nettle, is also among the easiest to take care of. The availability of captive bred specimens, as well as high-quality live and prepared jellyfish foods, will almost surely lead to an increased presence of … Continue reading An Overview of the Atlantic Sea Nettle (Chrysaora quinquecirrha)