Category Archives: Fish

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Reef Threads MACNA Minicast, Day 2

reefthreads1 Reef Threads MACNA Minicast, Day 2 It’s day two and we have so much to talk about. Here’s a just some of what we’re seeing, hearing, and learning. Download the podcast here, or subscribe to our podcasts at iTunes. Also, follow us on Twitter at reefthreads.—Gary and Christine More: Reef Threads MACNA Minicast, Day 2More:

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Reef Threads MACNA Minicast, Day 1

reefthreads1 Reef Threads MACNA Minicast, Day 1 It’s the first day of the Denver MACNA show and we’re reporting what we’re seeing and hearing. Hop you enjoy. Download the podcast here, or subscribe to our podcasts at iTunes. Also, follow us on Twitter at reefthreads.—Gary and Christine More: Reef Threads MACNA Minicast, Day 1More:

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Techniques for Maintaining Calcium and Alkalinity in Reef Tanks

reef chemistry1 Techniques for Maintaining Calcium and Alkalinity in Reef TanksCalcium and alkalinity are vitally important chemical parameters in reef aquariums. They are used by stony corals to build their calcium carbonate skeletons. A lack of calcium and alkalinity in the water will inhibit the growth of reef-building corals and invertebrates, which will eventually lead to health problems. What is calcium? Calcium is one of the major ions in salt water. It is the fifth most common ion in salt water behind, chloride, sodium, sulfate, and magnesium. In most healthy reefs, the calcium level hovers around 425 parts per million (ppm). More: Techniques for Maintaining Calcium and Alkalinity in Reef TanksMore:

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The Pros and Cons of a Bare-Bottomed Marine Tank

bare bottom tank1 The Pros and Cons of a Bare Bottomed Marine TankIf you’re in the process of planning and setting up a new saltwater aquarium, you’ll need to give some thought to the type of substrate you’d like to use. It may seem counterintuitive, but one of your options in this area is to dispense with any sort of substrate altogether and go bare-bottomed (BB). To help you decide whether the BB approach might be right for you, here are some of the pros and cons to consider: Pros: Very easy to vacuum up uneaten food, fish waste, and other detritus that has settled to the bottom without siphoning up sand in the process. Allows you to aim the effluents of powerheads and other sources of water movement in any direction desired to maximize water flow throughout the system and behind rockwork without creating an underwater “sand storm.” Detritus more readily remains suspended in the water column so it can be filtered/skimmed out efficiently. Cost savings from going sans substrate can be significant depending on the size of your system. Cons: Arguably less natural looking, though this is a matter of taste. (Plus, coralline algae and, potentially, various encrusting invertebrates will eventually conceal the bottom, giving the system a more natural look.) Can’t keep burrowing fishes as easily. Some BB aficionados get around this by placing a substrate-filled container somewhere in the system. Having no sand-dwelling microfauna can mean lower biodiversity More: The Pros and Cons of a Bare-Bottomed Marine TankMore:

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Earthquake In Napa Devastates Local Fish Store


Sunday’s 6.0 magnitude earthquake in Napa Valley, California had devastating effects for the surrounding community. With reports of up to 1 billion dollars in damage, the earthquake, which was the largest earthquake in the past 25 years, effected many businesses. Napa Valleys only aquarium store, ‘Aquatic World’, took quite the hit. Of the 150 tanks in the store, most were shattered in the quake. The scene that awaited the owners was disastrous, the aftermath left fish and tanks all over the shop floor. The owners worked for hours after the quake to try and save the 100 fish or so that survived by getting them to another location with working tanks. Here’s hoping for a speedy recovery for Aquatic World and its fishy inhabitants. MOREMore:

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Orchid Dottyback: Hardy, Peaceful, and Just Right for Reef Tanks

fridmani1 Orchid Dottyback: Hardy, Peaceful, and Just Right for Reef TanksCaptive breeding of marine fishes has been a boon to our hobby in any number of ways, one of which is democratizing access to formerly really pricy species such as the orchid dottyback (Pseudochromis fridmani). While I wouldn’t characterize the current market price of this Red Sea species as “cheap,” it’s definitely in the realm of affordable for most hobbyists—and it’s hardiness, ease of feeding, manageable adult size, reef-friendliness, and relatively peaceful disposition (as dottybacks go, that is) more than justify the modest outlay of cash for a specimen. Physical traits P. fridmani is a small (reaching only around 2½ inches), streamlined fish with reddish-purple overall coloration and blue scale margins. A dark stripe extends diagonally from the snout upward through the eye. This species’ appearance in aquariums can vary markedly depending on the lighting scheme. Feeding You’ll find this P More: Orchid Dottyback: Hardy, Peaceful, and Just Right for Reef TanksMore:

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Goliath Grouper Eats Shark Whole!

 While fishing off the West Coast of Florida, one fisherman got quite the surprise. While at first the man seem’s very excited to reel in a small black tip shark, the tides quickly turn when another fish quickly comes into the mix to take the catch. Not long after the shark is on the line, does a large fish, what appears to be a Goliath Grouper, come out of nowhere and inhale the shark! The commentary by the fisherman is rather entertaining. The Goliath Grouper is found in shallow warm waters off the coast of Florida and the Caribbean. The fish can reach lengths up to 16 feet and weigh up to 800 pounds. The fish are currently are on the endangered species list. Although its hard to imagine such a large fish being subject to predators, Groupers have been sought after by humans both for their meat and for game fishing, and only recently as the 1980′s have become protected. MOREMore:

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Reef Threads Podcast #195

reefthreads1 Reef Threads Podcast #195 A tang with attitude.This week’s podcast topics include MACNA, gluing frags, sea smells, frag tanks as displays, and buying high-end equipment. We hope you enjoy it and look forward to meeting people at MACNA and sharing what we see and hear with those who can’t attend. Download the podcast here, or subscribe to our podcasts at iTunes. Also, follow us on Twitter at reefthreads.—Gary and Christine More: Reef Threads Podcast #195More:

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