Vít Hoolock
Další nápady od uživatele Vít
Rainbow shiner, Notropis chrosomus, nuptial male.—An aptly named minnow that is native to the upland streams of the Mobile River drainage, the rainbow shiner occurs in small to medium size creeks. This species is one of the many nest associates of chubs (relatively large minnows that build stone nests in the spring as spawning beds). Nest associates spawn over the nest of chubs and derive advantage from the aggressive male chub guarding against predators such as sunfish and bass. Thus, the…

Rainbow shiner, Notropis chrosomus, nuptial male.—An aptly named minnow that is native to the upland streams of the Mobile River drainage, the rainbow shiner occurs in small to medium size creeks. This species is one of the many nest associates of chubs (relatively large minnows that build stone nests in the spring as spawning beds). Nest associates spawn over the nest of chubs and derive advantage from the aggressive male chub guarding against predators such as sunfish and bass. Thus, the…

Notropis chrosomus, rainbow shiner

Notropis chrosomus, rainbow shiner

Zebra mussels, Dreissena polymorpha, are tiny, ranging from approximately 1/64th of an inch (0.5 mm) to 2 inches (50.80 mm), bivalve mollusks that inhabit fresh to brackish or estuarine waters.They are native to Eastern Europe, arrived in cargo-ship ballast water to the Great Lakes in the mid-to-late 1980’s where they have become an invincible problem to industry and the native species. There are few ways to control them or prevent them from traveling into the interior of the United States.

Zebra mussels, Dreissena polymorpha, are tiny, ranging from approximately 1/64th of an inch (0.5 mm) to 2 inches (50.80 mm), bivalve mollusks that inhabit fresh to brackish or estuarine waters.They are native to Eastern Europe, arrived in cargo-ship ballast water to the Great Lakes in the mid-to-late 1980’s where they have become an invincible problem to industry and the native species. There are few ways to control them or prevent them from traveling into the interior of the United States.

Jim Long - "“This is significant,” he stated as he verified it as a zebra mussel (Dreissena polymorpha). Native to the Caspian Sea, this tiny critter hitchhiked in the ballast of a ship. Well, not this particular mussel, but its ancestors did. And not that long ago.  “Great, great grandpa zebra mussel” (life span may average about 6 years) disembarked from a freighter in the Great Lakes by about 1990.  Since then, ....http://americanfisheriessociety.org/afs-member-jim-long/

Jim Long - "“This is significant,” he stated as he verified it as a zebra mussel (Dreissena polymorpha). Native to the Caspian Sea, this tiny critter hitchhiked in the ballast of a ship. Well, not this particular mussel, but its ancestors did. And not that long ago. “Great, great grandpa zebra mussel” (life span may average about 6 years) disembarked from a freighter in the Great Lakes by about 1990. Since then, ....http://americanfisheriessociety.org/afs-member-jim-long/

Corbicula javanicus Gule kuleskjell

Corbicula javanicus Gule kuleskjell

Vesicularia montagnei  'Christmas Moss'

Vesicularia montagnei 'Christmas Moss'

The title says it all. "Old Tree" Polish aquascaper Pawel Iglewski designed this tank around an old tree, using plants like flame moss, Java moss and R...

The title says it all. "Old Tree" Polish aquascaper Pawel Iglewski designed this tank around an old tree, using plants like flame moss, Java moss and R...

The ball-shaped marimo algae of Lake Akan. A marimo is a rare growth form of the species where the algae grow into large green balls with a velvety appearance. Colonies of such balls are only known to form in Iceland, Scotland, Japan and Estonia.

The ball-shaped marimo algae of Lake Akan. A marimo is a rare growth form of the species where the algae grow into large green balls with a velvety appearance. Colonies of such balls are only known to form in Iceland, Scotland, Japan and Estonia.

CPO Dwarf Orange Crayfish -  (http://www.eliteinverts.com/copy-of-electric-blue-crayfish/)

CPO Dwarf Orange Crayfish - (http://www.eliteinverts.com/copy-of-electric-blue-crayfish/)

cpo

cpo