In cladistics, a character or trait shared by two or more taxonomic groups and derived from a remote or much earlier common ancestral form.
Glossary: symplesiomorphy
Glossary: synapomorphy
In cladistics, a character or trait shared by two or more taxonomic groups and derived from a common ancestral form, whose ancestor in turn did not possess that trait.
Glossary: synchronous spawning
Spawning behaviour in which all individuals of a species spawn in unison, normally as a result of some environmental trigger or cue.
Glossary: synonym
In zoological nomenclature, any of two or more names of the same taxonomic rank used to denote the same taxon. Names referred to as synonyms are not usually valid in the current sense.
Glossary: synonymous
Having the same or similar meaning, significance or implication; being a synonym of something.
Glossary: synonymy
The quality or state of being synonymous; a list or record of all synonyms that have been applied to a species or group
Glossary: synopsis
Brief outline or description of a taxon.
Glossary: syntopic
Occupying the same habitat within a specified geographical area, and sometimes competing for resources as a result.
Glossary: syntype
Any specimen within a type series if no holotype or lectotype has been designated, the syntypes collectively representing the name-bearing type.
Glossary: systematics
Branch of biology concerned with classification and nomenclature of organisms, and the relationships between them; taxonomy.
Product reviewers wanted
Hello! Very much interested in writing for you, please include me in the info. Thank you for the opportunity!
6th Sep 2020
Product reviewers wanted
I would be interested in reviewing products. Before retiring I was a technical writer and managed a Quality Management Program.
30th Aug 2020
Product reviewers wanted
I'm interested and can write reviews from the perspective of someone new to the hobby. I'm only 3-4 months in, but hopefully I can help someone that's...
23rd Aug 2020
Product reviewers wanted
I’m interested in doing this if there is still availability, it sounds like fun! Thanks
19th Aug 2020
Barbodes semifasciolatus – Golden Barb* (Barbus sachsii, Puntius schuberti)
I simply had a question (please forgive if this is not allowed, I read the FAQ but I was not sure). I was wondering if there is any evidence of offsp...
12th Aug 2020