Search results
Results from the WOW.Com Content Network
About 1,900 species of starfish live on the seabed in all the world's oceans, from warm, tropical zones to frigid, polar regions. They are found from the intertidal zone down to abyssal depths, at 6,000 m (20,000 ft) below the surface. Starfish are marine invertebrates. They typically have a central disc and usually five arms, though some ...
This is a photograph from the Freshwater and Marine Image Bank at the University of Washington. Materials in the Freshwater and Marine Image Bank are in the public domain. No copyright permissions are needed. Acknowledgement of the Freshwater and Marine Image Bank as a source for borrowed images is requested.
Requires brackish aquarium conditions with very low Nitrite and Nitrate levels to be kept successfully. Freshwater compromises immune system, harms puffer, and shortens life extremely. Commonly kept in freshwater. Green spotted puffer Tetraodon nigroviridis: 6" Often sold as freshwater fish, but this species actually thrives in brackish water.
Found burrowing in mud or sand flats in the wild, they need a deep sand bed in their aquarium. 60 cm (23.6 in) Sea spider [3] Pycnogonids: No: Not collected for the aquarium trade, but occasionally seen on live rock and corals as a hitchhiker. They can be pests in a reef tank, preying on soft coral, sponges and anemones. 0.2–50 cm (0.1–19.7 in)
The species is also considered in reef aquariums. It feeds on a thin layers of algae, and so it can live only in an old well-established aquarium. Little can be done to supplement its diet. The red seastar is known to be very intolerant of sudden changes in water chemistry. [4] [2]
A starfish has five identical arms with a layer of “tube feet” beneath them that can help the marine creature move along the seafloor, causing naturalists to puzzle over whether sea stars have ...
Members of this family live on hard surfaces at depths between 100 and 4,500 m (300 and 14,800 ft). They raise their arms vertically above their discs to filter feed on suspended organic particles drifting past. They are able to raise their arms in this way because of the small size of its plates on the aboral surfaces of their arms which gives ...
The species is also considered in reef aquariums. It feeds on the surface of the stones in thin layers of algae, so it can live only in an old well-ripened aquarium. If the algae are not growing fast enough, supplemental feeding is usually unsuccessful, and this starfish dies of starvation.