Prefix indicating change, alteration, or alternation.

Sum total of the chemical processes occurring in living organisms which are necessary to maintain life.

A physical change or succession of such changes in form during the life cycle of an organism.

Methylthioninium chloride, a chemical compound forming a blue solution when dissolved in water. Has a range of applications but used in aquaria as an antifungal, antibacterial, and anitparasitic agent.

Antibiotic used in aquaria as a wide spectrum treatment for bacterial and protozoan infections.

Vernacular name for the tiny freshwater crab Limnopilos naiyanetri Chuang and Ng 1991, a member of the family Hymenosomatidae, or false spider crabs. It’s native to Nakhon Pathom province, southern central Thailand and its body achieves a maximum diameter of around  1 cm. Completely aquatic and apparently spends its entire life cycle in fresh water.

A measurement of liquid, equivalent to a cube 1mm on each side. One thousandth of a cubic centimetre/centimeter.

Organism that can be seen only with the aid of a microscope. Typically unicellular, e.g., baceria, protozoa, some algae.

Feeding on very small organisms or particles.

Tiny opening in an egg through which spermatozoa can enter.

Section of DNA comprising very short nucleotide sequences repeated many times. Highly polymorphic and used as a marker to determine genetic diversity, identify important genetic traits, analyse relationships, etc..

Panagrellus redivivus; a free-living, soil-dwelling nematode worm often cultivated by aquarists for feeding to fish fry.

Orientated laterally along the middle of something, e.g., a midlateral stripe.

To periodically change location, especially seasonally, for reproductive or feeding purposes.

A journey between different regions or countries at specific times of year.

A measurement of liquid, equivalent to a cube 1cm on each side. Also known as a cubic centimetre/centimeter.

The seminal, sperm-containing fluid of a male fish; male reproductive glands when they contain sperm.

Imitation; mimicry.

Of, relating to, or practicing mimesis.

To resemble closely; imitate; simulate; take on the appearance of; an organism displaying mimicry.