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Fish Tanks, Aquariums and Things Aquatic in the News - Ever wonder why Reef Fish are so colorful?
What's new at Aquatic Design Aquariums - Recent projects
Additions to our Aquatic Gallery - Photographs of Recent Projects All Things Aquatic
Affiliate News - Changes to our business affiliates and advertisers list
Kid's Fish Tanks & Aquariums - Aquatic stuff for young Aquarists
Spectacular Aquatic Pictures - Some of our favorites
Aquarist Newsletter Archives - Choose from our menu of past Newsletters and Supplements
Ever wonder why reef fish are so colorful?
The exact reason is still controversial among biologists. Although many fish may dazzle the human eye with scarlet, rose, yellow, turquoise, emerald 
and dozens of other shades, some theorists propose that in the complexity of a reef, the spectrum of fish colors serves as camouflage.
However, other scientists suggest the opposite notion. Their concept is that brilliant colors send big bold messages to other creatures that may be advertising come-ons or warnings or both.
For more click on The Colors of Reef Fish
See our Freshwater Aquarium display in the lobby of the Cinemark Tinseltown Theaters in Plano TX. This is typical of our line of commercial aquariums for business, custom homes, corporate offices and waiting rooms. If you want one at your place of business, the next step is to call us at (972) 423-0414. Our aquarium artisans and project managers will meet with you at your convenience. Afterwards we will present a proposal to you for your approval, before the work starts. On all our projects we aim to finish ahead of schedule and below budget. Our commercial aquarium website is www.aquaticdesignaquariums.com
Aquatic Newsletter Feature The difference between Freshwater Fish and Saltwater (marine) Fish is subtlety controlled by a process called Osmoregulation. Fish are literally parcels of fluids within a fluid environment. In both saltwater fish and freshwater fish there is that distinct difference between the salt concentration of the environment and their body fluids. For a fish body to work efficiently, it must maintain its internal salt water balance at a constant level, despite the salt concentration in their environment's water. To keep their salt levels constant, membranes that permit osmosis primarily in the fish's gills, evolved and adapted to the salt concentration in the environment. These membranes regulate the amount of salt that seeps through the membrane into the fish's body fluid to maintain it's constant salt level. Another difference between freshwater and saltwater fish is their respiration systems. Like us, fish require oxygen for life. How they remove the oxygen from the water and transfer it to their cells is called respiration. Freshwater contains only 5% of the oxygen present in air, while saltwater contains 20% less oxygen than freshwater. That subtle difference required adapting to how efficiently fish pump water over their gills. Freshwater fish required less oxygen efficiency but required adapting to a strange hostile habitat. Through evolution we may be descendants of those first ancient freshwater fish that adapted some 350 million years ago! It gave us another reason to evolve differently over the eons. Do we really rule the Earth? |
Two clowns swimming the mushroom patch in a 105 gallon reef tank. They look innocent, but are they?
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Kokopelli Flix - September 2004