Thalassianthidae is a family of

sea anemone Sea anemones ( ) are a group of predation, predatory marine invertebrates constituting the order (biology), order Actiniaria. Because of their colourful appearance, they are named after the ''Anemone'', a terrestrial flowering plant. Sea anemone ...

s that contains the

genera Genus (; : genera ) is a taxonomic rank above species and below family as used in the biological classification of living and fossil organisms as well as viruses. In binomial nomenclature, the genus name forms the first part of the binomial s ...

''Actineria'', ''Cryptodendrum,'' ''Heterodactyla'', and ''Thalassianthus''.World Register of Marine Species. (2016). Thalassianthidae Milne Edwards, 1857. http://www.marinespecies.org/aphia.php?p=taxdetails&id=196167 These sea anemones do not host any varieties of

clownfish Clownfishes or anemonefishes (genus ''Amphiprion'') are saltwater fishes found in the warm and tropical waters of the Indo-Pacific. They inhabit mainly coral reefs and have a distinctive colouration typically consisting of white vertical bars on ...

es, but have been associated with some species of

commensal Commensalism is a long-term biological interaction (symbiosis) in which members of one species gain benefits while those of the other species neither benefit nor are harmed. This is in contrast with mutualism, in which both organisms benefit f ...

anemone shrimp.Tree of Life. (2000). Thalassianthidae. http://tolweb.org/Thalassianthidae/18326 Research has shown that three

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

s belonging to the

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

Thalassianthidae - (''Cryptodendrum adhaesivum'', ''Heterodactyla hemprichii'' and ''Thalassianthus aster'') - contain type 2 sodium channel

peptide Peptides are short chains of amino acids linked by peptide bonds. A polypeptide is a longer, continuous, unbranched peptide chain. Polypeptides that have a molecular mass of 10,000 Da or more are called proteins. Chains of fewer than twenty am ...

toxins capable of causing

lethality Lethality (also called deadliness or perniciousness) is how capable something is of causing death. Most often it is used when referring to diseases, chemical weapons, biological weapons, or their toxic chemical components. The use of this term ...

to freshwater crabs. In addition, high

molecular weight A molecule is a group of two or more atoms that are held together by Force, attractive forces known as chemical bonds; depending on context, the term may or may not include ions that satisfy this criterion. In quantum physics, organic chemi ...

toxins appear to be a new type of toxin in the Thalassianthidae

s. This information has not been found on any other scientific paper up to this point in time. ''Heterodactyla hemprichii'' is a species of sea anemone in the family Thalassianthidae This sea anemone does not host any varieties of clownfish.

References

Actinioidea Taxa named by Henri Milne-Edwards {{Actiniaria-stub