In species possessing more than a single dorsal fin, the space between the first and second fins.
Glossary: interdorsal
Glossary: internal filter
A filter located inside the aquarium and typically used for smaller tanks due to its reduced capcity for media compared to external filters.
Glossary: International Code of Zoological Nomenclature
Set of fixed rules for the naming of animals and the resolution of problems in zoological nomenclature.
Glossary: International Union for Conservation of Nature
The world’s largest and most influential environmental organisation.
Glossary: interopercle
One of the bones comprising the operculum.
Glossary: interopercular
Of, relating to, or located on the interopercle.
Glossary: interopercular spine
Spine located on the interopercle, present in some fishes.
Glossary: interorbital
Of, relating to, or located on the space between the eyes
Glossary: interorbital distance
The shortest measurable distance between the eyes.
Glossary: interradial
Located between two fin rays or spines.
Glossary: interradial membrane
The membrane connecting fin rays and spines in fishes.
Glossary: interspecific
Existing or occurring between different species. Opposite of intraspecific.
Glossary: interstitial
Relating to or inhabiting the small spaces between tissue, organs, or grains of a substrate.
Glossary: intertidal
Of or being the area between high and low tide marks; recurrently covered and exposed by tides.
Glossary: intraspecific
Existing or occurring within a given species. Opposite of interspecific.
Glossary: introduced species
See exotic species.
Glossary: intromittent
Used in reference to a modified fin of a male which aids in transfer of gametes to the female during reproduction.
Glossary: invalid
In zoological nomenclature, of an available name or nomenclatural act that is not valid under the ICZN code.
Glossary: invalid name
In zoological nomenclature, any available name for a taxon other than the valid name.
Glossary: invasive
Most commonly used in reference to a native or non-native species with the tendency to spread widely that does or is likely to cause environmental, economic and/or ecological harm, though may also be applied to widespread, usually non-native, species that do not exert such adverse effects.
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