ID please
- Thread starter jw0934
- Start date
reefreak29
Active Member
the first pic is a nuesence anemone called aptasia(you will want to get rid of this it spreads quickly) the second pic are harmless feather dusters
socal57che
Active Member
Originally Posted by Cranberry
http:///forum/post/2728243
That second pic with the circle more in the middle.... that's hydroids.
I agree, jellyfish.
http:///forum/post/2728243
That second pic with the circle more in the middle.... that's hydroids.
I agree, jellyfish.
socal57che
Active Member
Here's some nice reading on the cnidaria, hydrozoa, hydroids
http://www.discoverlife.org/mp/20q?search=Hydrozoa
"Overview
Hydrozoans belong in the phylum Cnidaria. Most hydras alternate between an asexual polyp stage and a sexual medusa stage, though the best-known Hydrozoan, Hydra, never becomes a medusa, spending its whole life as a polyp. Found in still or slow-moving water, Hydras live a solitary lifestyle attached to leaves and stems. Nematocysts, characteristic of all Cnidarians, are coiled thread-like structures that Hydras use to stun prey with poison. Once their prey is helpless, Hydras use their tenacles to lead their meal to their mouth. Hydras eat small crustaceans, insect larvae, and annelids. However, their poison is fairly unharmful to humans, except those who have extreme allergies to the poison.
Hydras are able to sexually or asexually reproduce, the former involves fertilization of eggs by sperm floating in the water, and the latter involves budding of the Hydra, and each individual bud develops into a young hydra.
Colonial hydrozoans have a base, a stalk, and at least one polyp, which during reproduction buds, producing a medusae. These medusae then mature and release gametes, which fuse to form zygotes, which grow into free-swimming planula larvae upon settling on a suitable substrate develop into a hydroid colony by asexual reproduction. There are about 3,000 known Hydrozoan species."
http://www.discoverlife.org/mp/20q?search=Hydrozoa
"Overview
Hydrozoans belong in the phylum Cnidaria. Most hydras alternate between an asexual polyp stage and a sexual medusa stage, though the best-known Hydrozoan, Hydra, never becomes a medusa, spending its whole life as a polyp. Found in still or slow-moving water, Hydras live a solitary lifestyle attached to leaves and stems. Nematocysts, characteristic of all Cnidarians, are coiled thread-like structures that Hydras use to stun prey with poison. Once their prey is helpless, Hydras use their tenacles to lead their meal to their mouth. Hydras eat small crustaceans, insect larvae, and annelids. However, their poison is fairly unharmful to humans, except those who have extreme allergies to the poison.
Hydras are able to sexually or asexually reproduce, the former involves fertilization of eggs by sperm floating in the water, and the latter involves budding of the Hydra, and each individual bud develops into a young hydra.
Colonial hydrozoans have a base, a stalk, and at least one polyp, which during reproduction buds, producing a medusae. These medusae then mature and release gametes, which fuse to form zygotes, which grow into free-swimming planula larvae upon settling on a suitable substrate develop into a hydroid colony by asexual reproduction. There are about 3,000 known Hydrozoan species."