Results for “freshwater”

floating meadow

Floating tangle of plants comprising one or more species. Important habitat for many freshwater fishes in certain biotopes.

Used in 3 profiles

Hydra

Genus of freshwater cnidarian existing only in sessile, solitary polyp form attached to the substrate at one end and with a mouth surrounded by up to 12 tentacles at the other. Members are predatory, feeding mostly on small invertebrates, and regarded as pests in aquaria due to their appearance as whitish spots on submerged surfaces and tendency to prey on fish fry.

Used in 1 profile

ich

Common name for Ichthyophthirius multifiliis, a protozoan which infects freshwater fish. Commonly referred to as white spot due to the characteristic white nodules formed under the skin or gill tissue during the feeding stage of its life cycle.

Used in 18 profiles

labyrinth fish

Any member of the freshwater fish suborder Anabantoidei, characterised by possession of a labyrinth organ.

Used in 18 profiles

labyrinth organ

Highly folded, vascularised, suprabranchial accessory breathing organ formed via extension of the first epibranchial bone and used to respire atmospheric oxygen. Found in all members of the freshwater fish suborder Anabantoidei.

Used in 96 profiles

lentic

Of, relating to, or inhabiting still or very slow-moving bodies of freshwater. Opposite of lotic.

Used in 1 profile

limnology

The scientific study of freshwaters, particularly lakes and ponds.

lotic

Of, relating to, or inhabiting actively moving bodies of freshwater. Opposite of lentic.

micro crab

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.

Mysis

Genus of mysid crustacean of which members inhabit both marine and freshwater environments. Some species are used as fish food in aquaria, and usually available frozen.

Used in 21 profiles

nano aquarium

Small aquarium of arguable definition. Freshwater nano-aquaria are generally accepted to hold between 5-10 US gallons (4.16-8.32 UK gallons; 18.93-37.85 litres) whereas in the marine hobby any aquarium with a volume of 30 US gallons (24.98 UK gallons; 113.56 litres) is generally considered to be a nano-system. These definitions vary, however. Also known as a nano tank.

Used in 5 profiles

Oodinium

Genus of parasitic dinoflagellates occurring in marine and freshwater fishes and sometimes referred to as Piscinoodinium or 'velvet disease'.

Used in 7 profiles

Ostracoda

Class of crustacean, sometimes referred to as seed shrimp, characterised by possession of a bivalve-like protective carapace. Found in both freshwater and marine environments, and sometimes used as food for small fishes in aquaria.

potamodromous

Migratory within freshwaters such as rivers or streams.

rift lake

Type of lake that forms in a rift zone or rift valley and often very deep with steep cliffs around the margins, also known as a rift valley lake, sag pond, or fault-trough lake. The largest freshwater lakes in the world are all of this type. Also used in the aquarium hobby in reference to the Rift Valley lakes of the East African rift.

Used in 32 profiles

river

Vaguely-defined, generic term for a variably-sized, natural, usually freshwater, watercourse, that empties into an ocean, sea, lake, or another river.

Used in 1,266 profiles

salt bath

Treatment against various parasites which involves placing a freshwater fish in a solution of saline water with the salt concentration and period of exposure variable depending on the size of the fish and severity of infection. Similar to a salt dip in that parasites are killed via osmotic shock, but of longer duration.

salt dip

Treatment against various parasites which involves briefly placing a freshwater fish in a solution of saline water with the salt concentration depending on the size of the fish and severity of infection. Similar to a salt bath in that parasites are killed via osmotic shock, but of much shorter duration.

total dissolved solids

Measure of the total concentration of both organic and inorganic, microscopic particles suspended in a given liquid. Usually applied only to freshwater systems and measured using a conductivity or total dissolved solids meter with results expressed in units of mg per unit volume of water (e.g., mg/L) or parts per million (ppm). Soft water with low pH generally has low levels of total dissolved solids whereas harder water with higher pH tends to contain correspondingly increased concentrations. Often abbreviated to TDS.

Used in 2 profiles