"Avantor"

Carassius auratus.

Erpobdella obscura

Crayfish are a mixture of Orconectes immunis and Orconectes virilis.

Anodonta subobicularis.

Poecilia reticulata.

Hippodamia convergens.

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Everything you need for individual student dissections, whether at home or school.

Set contains one male betta, a package of ceratophyllum, and an aquatic habitat.

White to gray, medium to coarse-grained, crystalline.

Sale

Unpolished metamorphic rock with silky lusture, red-brown colour, and clear parallel intergrown quartz crystals.

Iron oxide-hydroxide mineral; reddish brown to black color; crystal habit ranges from massive to acicular.

Brazil.

Clear to yellow translucent.

Brownish gray, translucent.

Yellow to orange crystal with a glassy luster and smooth, often transparent appearance.