In the middle of the last century began to actively explore the underwater world. At the bottom of the oceans live millions of different species, many of which are still not known to us.
Look at a selection of rare fish, which turned out to discover humanity.
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1. Ambon scorpionfish (Eng. Ambon Scorpionfish, lat. Pteroidichthys amboinensis).
Opened in 1856. Easily identifiable by the huge "eyebrows" - specific build-up over the eyes. Is able to change color and fade. Leads "guerrilla" hunt - masquerading on the bottom and waiting for prey. Is not uncommon and quite well studied, but its extravagant appearance simply can not fail to note! (Roger Steene / Conservation International)
2. psychedelic fish-frog (Eng. Psychedelic Frogfish, lat. Histiophryne psychedelica).
Opened in 2009. Very unusual fish - tail fin is bent to one side, modified pectoral fins like legs and land animals. The head is large, wide-set eyes directed forward, as in vertebrates, so the fish has a kind of "face." Color yellow or reddish fish with winding blue and white stripes, radiating in all directions from the eyes of blue. Unlike other fish that swim, this kind of like jumping moves, starting from the bottom of the pectoral fins and pushing water from the gill slits, creating reactive thrust. Fish tail curved to one side and can not directly guide the body, because it varies from side to side. Also fish can crawl along the bottom with the help of the pectoral fins, turning them both down. (David Hall / EOL Rapid Response Team)
3. rag-pickers (Eng. Leafy Seadragon, lat. Phycodurus eques).
Opened in 1865. The representatives of this species are remarkable that all their body and head covered with spikes, simulating thallus algae. Although these processes and are similar to the fins at sea, they do not take part, serve to mask (as in the hunt for shrimp and for protection from enemies). Inhabits the waters of the Indian Ocean surrounding the southern, south-eastern and south-western Australia, as well as northern and eastern Tasmania. It feeds on plankton, small shrimp, algae. Lacking teeth picker swallow food whole. (Lecates / Flickr)
4. Ocean sunfish (Eng. Ocean Sunfish, lat. Mola mola).