In Praise of Fish Oil

Fish oil is an important part of Paul B’s fish feeding regimenHobby pioneer Paul “Paul B” Baldassano has some strong opinions on what types of foods are best for fish, formed over his many decades of involvement in the marine aquarium hobby. Somewhere near the top of his list is fish (or krill) oil. He explains exactly why in the following excerpt from the third chapter of his book The Avant-Garde Marine Aquarist: A 60-Year History of Fishkeeping:From Chapter 3: Keeping Fish Healthy Oil, in my opinion, is one of the most important things you can feed to fish. No, not Oil of Olay or olive oil, but fish or krill oil. I take it myself every day, but not too much, as I don’t want to resemble my old flounder-faced girlfriend. In the sea, fish get a large percentage of their diet from pure fish oil.

The Best Beginner Large-Polyp Stony Corals

There are a number of beginner-friendly LPS coral speciesThroughout my years as an aquarium enthusiast, I have followed all the advice from all the books I could get my hands on since there were no other hobbyists with the same interest as I in my circle of friends growing up. My aquatic progression took the following path: 5-gallon slate & stainless-steel-framed fancy guppy tank from my grandfather Goldfish won at the carnival Betta bowl 10-gallon freshwater tropical tank 29-gallon cichlid-specific tanks (bred angelfish and convicts) Brackish-water tank 55-gallon saltwater FOWLR tank Saltwater FOWLR carnivorous tank Saltwater soft corals & anemones Saltwater large-polyp stony corals (LPS) Saltwater small-polyp stony corals (SPS) The reason I went through all these stages was the lack of technology and information that exist today. I could not keep any corals well at all back in the 1980s because the efficiency of the power protein skimmer did not exist (still used wooden airstones), the lighting was still just T12 fluorescents, and the filtration was not very good at exporting nutrients (canister filters, undergravel filters, wet/dry trickle filters). If you did not do regular water changes, chances are the livestock would all eventually die. The carnivorous fish were the easiest to keep while the omnivores tended to die out due to malnutrition because the foods available at the time didn’t provide adequate nutrition.My 90-gallon LPS system These days, with the help of current technologies, you can more or less jump straight to any stage without the experience of prior stages. Thanks to the vast experiential knowledge base accumulated by hobbyists around the world these last few decades, we now have references and starting points good enough to help just about anyone succeed with the correct coaching. The key is to do your research and consider the source of information from the standpoints of relevance and accuracy. Therefore, in this article, I’m going to jump right to the large-polyp stony corals

The Hardy, Colorful, Nano-Friendly Yellow Watchman Goby

Yellow watchman goby (Cryptocentrus cinctus)Marine aquarium hobbyists who maintain nano tanks, whether by choice or necessity, often find it challenging to acquire fish that are well suited to their diminutive systems. But in the yellow watchman goby (Cryptocentrus cinctus), they can get all the attributes they seek—small mature size, attractive coloration, hardiness, and interesting behavior—in a single package. While the yellow watchman goby, aka the yellow shrimp goby or yellow prawn goby, can be housed by itself with no problems, in my opinion, it’s much more interesting and rewarding to keep it as it commonly occurs in nature—with an Alpheus spp. pistol shrimp (e.g., Alpheus bellulus, the tiger pistol shrimp) sharing its burrow.In this mutualistic symbiotic relationship, the shrimp, which has very poor eyesight, continuously excavates the burrow while the goby stands sentinel against predators. Almost at all times, the shrimp keeps at least one of its antennae in contact with the goby so it can immediately sense when danger is near via the goby’s body language. Physical traits C. cinctus has a torpedo-like body shape; two distinct dorsal fins; a rounded caudal fin; the typically goby-esque fused pelvic fins; high-set, bulbous eyes; and an oversized, “frowning” mouth.

Coral Catfish: Cute-Juvenile Syndrome with a Venomous Twist

Coral catfish (Plotosus lineatus)A school of juvenile coral catfish (Plotosus lineatus) rolling and wriggling en masse along the ocean floor is among the more endearing sights one can behold in the marine realm. Not surprisingly, after seeing this phenomenon in nature or on video, many hobbyists are inspired to recreate it in their home aquaria. What’s more, individual juveniles of the species—the only catfish found on tropical coral reefs—are irresistibly cute, so even those hobbyists who have never observed their schooling behavior may be charmed by them at a local fish store. But before yielding to temptation and acquiring P. lineatus for your tank, it’s important to be aware of some key facts with respect to its growth potential, social behavior, and defensive capability. So, let’s take a closer look at these and other characteristics exhibited by this species.Coral cats and CJS The coral catfish, aka the striped eel catfish or saltwater catfish, is one of several fish species available in the marine aquarium trade that exhibit what I (as of this morning) like to call Cute-Juvenile Syndrome, or CJS.

Sicce HyperKoral & Calanus 

I recently wrote about Sicce’s new HyperReef three-stage dosing system. There is a second part to this system; it consists of two products formulated to feed corals and other reef organisms directly through the water...