Showing posts with label Fish. Show all posts
Showing posts with label Fish. Show all posts

Tuesday 26 July 2016

The Flying Gurnard



The flying gurnard (Dactylopterus volitans), is a bottom-dwelling fish of tropical to warm temperate waters on both sides of the Atlantic Ocean.  Although, on the American side, it is found as far north as Massachusetts specially as far as Canada and south as Argentina, including the Caribbean and Gulf of Mexico. On the European and African side, it ranges from the English Channel to Angola, including the Mediterranean. The flying gurnard built in general on the sea robin plan, is remarkable for its enormous pectorals. The flying gurnard also known as the helmet gurnard, similar species from the genus Dactyloptena are found in the Indian and Pacific Oceans. The flying gurnard is a very dazzling fish, erratic widely in color; so most of them are of in the shade of brownish to greenish olive above, with the lower side paler, nonetheless marked erratically with reddish salmon or salmon yellow. Thus, the pectorals are numerously marked with bright blue streaks near their bases, with blue spots and bars toward their tips. However the caudal fin typically has about three brownish-red cross bars.

Moreover, when the fish excited, he spreads its fanlike wings which are beautiful semi-transparent, with a phosphorescent bright blue coloration at their tips. These are naturally designed to scare away predators, but they don't help the fish to glide in the air as do the fins of flying fish. The flying gurnard has large eyes and fish reaches up to 50 cm in length and 1.8 kg in weight. The fish's main diet consists of small fish, inverts, bivalves, crustaceans, crab, shrimp, and shells. In tank, this fish is a good scavenger and can help keep the tank bottom cleaned. Therefore, this is a fascinating fish to keep, beautiful, entertaining and easy to care for. Though, this fish can grow to a large size, it should only be kept if you have a big aquarium to give it the room it needs.

Sunday 8 June 2014

Fin Whales; Ths World's Fastest Whale



Fin whales (Balaenoptera physalus) are the 2nd largest living mammals on our earth, just after blue whales. When you consider that the average fin whale needs to hurl its 80+ tons and 89+ feet out of the water and into the air, the spectacle becomes even more incredible. As one of the fastest whales in the world, the fin can reach cruising speeds of 23 mph with short bursts up to 29 mph. (The Sei whale may beat it for short sprints up t0 40mph, but not for cruising speed. Their remarkable speed has given Fin whales the nickname "greyhounds of the deep." Fin whales appearance is mild sexual ‘dimorphism’ with females measuring longer than males by 5-10%. Adults can weigh between 80,000-160,000 pounds (40-80 tons). 

Fin whales are found in all the oceans of the world, but their migration process is not well understood. In the Southern Hemisphere, fin whales migrate south to feed on krill and other plankton in the summer, and north to likely give birth in warm waters closer to the Equator in the winter. Though, it is not well defined whether all of the population engages in this migration every year.In the Northern Hemisphere there’re related north-south migrations, and several whales appear to return to the same feeding grounds every year, but the pattern is not so clear-cut, maybe because of the influence of the Gulf Stream in the North Atlantic. Populations of northern and southern hemispheres never meet.Fin Whale has been sternly impacted worldwide by commercial whaling when about more than 750,000 animals were killed in areas of the Southern Hemisphere only in between 1904 and 1979, and they’re rarely seen these days. Their current status is unidentified in most areas outside of the North Atlantic. 

Well, Fin whales colors are dark grey to brownish black, with pale or white undersides. Some fin whales have a pale grey chevron on each side behind the head and there may be a dark stripe running up and back from the eye, and a light stripe arching down to where the flipper joins the body. This mammal has a unique characteristic among mammals, famous as asymmetrical pigmentation: the lower right jaw is bright white, the lower left jaw black. The reason for this unusual coloring is unidentified, but specific researchers have speculated that fin whales circle schools of fish with the white side facing the prey and frightening them into denser schools that are easier for the whale to catch.

Fin whales are pelagic and coastal species, sometimes occurring in shallow waters (30 m), most observed as single animals, but sometimes see in pairs or groups. Young fin whales nurse for 6-7 months, and sexual maturity is reached in between 6 to 11 years. The life span of a fin whale is around 85 to 90 years. It has been assumed that breeding occurs in warm waters, but no exact breeding grounds have been observed. Females give birth every 2-3 years and the gestation period is 11 to 11.5 months. In winter and autumn there’s no feeding and whales are found in lower latitudes. Herring, capelin and other shoaling fish are eaten in both the North Atlantic and North Pacific, along with squid, and euphausiids and copepods which are small crustaceans. The fin whale, like other baleen whales, strains its food from the water through baleen plates.

Thursday 5 December 2013

Dazzling Series of Siamese fighting fish By Visarute Angkatavanich

Visarute Angkatavanich is commercial photographer right now living in Bangkok, Thailand. He takes mindblowing portraits pictures of Fighting Fish (Betta Splendens). Visarute ongoing photo series of several portraits captures of elegant aquarium fish in motion accentuating their large and vibrant fins.  Normally Siamese Fighting Fish generally grow just about 7 CM in length and normally lived only 2 to 4 years. Their major popularity is as aquarium fish and long history of captive breeding has created innumerable variations in shape and colors. Siamese Fighting fish are famous to be very aggressive and two males in the same tank will typically fight to the death. However usually called a betta, that is the name of a genus not only containing this fish (B. splendens), but also other species.








Monday 2 December 2013

Incredible Creatures Actually Exist on our Planet

Just Check out these stunning animals. They're absolutely incredible. Translucent, colorful, oddly shaped, spiky, wiry, egg-like and completely out of this world even though they're from our world. These animal photographs were collected in Ross Piper's new book Animal Earth: The Amazing Diversity of Living Forms.