Prefix meaning 'new'.
Glossary: neo-
Glossary: neoteny
Form of paedomorphism characterised by retention of juvenile features in an adult individual via slowed or delayed maturation.
Glossary: neotropical
Of or relating to a zoogeographical region consisting of South America plus the portion of North America lying south of the tropic of Cancer.
Glossary: neotype
A single specimen designated as the name-bearing type of a species subsequent to its description, most often when the holotype, lectotype, and syntype no longer exist.
Glossary: nested
In cladistics, used to refer to a clade located within a larger clade.
Glossary: neural arch
A bony or cartilaginous arch-shaped structure arising from the dorsal side of a vertebra and enclosing the spinal cord.
Glossary: neurocranium
The section of the skull housing and protecting the brain.
Glossary: neuromast
Individual sense organ of the lateral line system, comprising nerve fibres connected to a cluster of sensory cells.
Glossary: neuromastic pitting
Severe physical condition of unconfirmed origin occurring in certain fishes which appears related to poor water quality and/or nutrition. The primary symptom is necrosis of the tissue surrounding neuromasts on both the head and body and if left unchecked the disorder can result in death. Similar to, but not analagous with, head and lateral line […]
Glossary: neurotoxin
A toxin affecting the nervous system.
Glossary: neutral
Neither acidic nor alkaline.
Glossary: neutral water
Pure, ion-free water with a pH of or very close to 7.0.
Glossary: new combination
In zoological nomenclature, the first combination of a generic and previously-published specific name.
Glossary: niche
The position or role occupied by an organism within an ecological community.
Glossary: niche overlap
An overlap in resource requirements by two or more species.
Glossary: nitrate filter
See nitrate reactor.
Glossary: nitrate reactor
Piece of aquarium equipment that can be thought of as an anaerobic filter. Provides a means by which large enough populations of anaerobic bacteria can be maintained so that nitrates are actively removed from the water in the form of nitrogen gas, a process normally facilitated by regular partial water changes. Also known as a […]
Glossary: nitrates
Any salt or ester of nitric acid, and the end product of the portion of the nitrogen cycle taking place in most closed aquarium systems (the conversion of nitrates to nitrogen gas in natural systems is carried out by anaerobic microorganisms not normally present in sufficient numbers in aquaria, though this process can be induced […]
Glossary: nitrify
To convert ammonia or other nitrogen compounds into nitrites or nitrates.
Glossary: nitrites
A salt or ester of nitrous acid. Produced in aquaria via metabolisation of ammonia by nitrifying bacteria of the genus Nitrosomonas, and toxic to fishes if present in sufficient concentrations, but in a mature system is further converted into less-harmful nitrates by other bacteria of the genus Nitrospira.
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