Search results
Results from the WOW.Com Content Network
Temperature-dependent sex determination (TSD) is a type of environmental sex determination in which the temperatures experienced during embryonic/larval development determine the sex of the offspring. [1] It is observed in reptiles and teleost fish, with some reports of it occurring in species of shrimp.
Most fish and plant species tolerate only a limited temperature range; tropical aquaria, with an average temperature of about 25 °C (77 °F), are much more common. Temperate or coldwater aquaria are for fish that are better suited to a cooler environment. Temperature consistency is more important than range.
A highly spirited fish that may occasionally chase its own species as well as harass slow moving fish with long fins. This fish is very hardy and can stand a variety of water qualities. Disease is not a big problem with the black tetra. The black tetra is also known as the black skirt tetra.
These fish are peaceful towards other fishes, but frequently bicker among themselves. Typical lifespan in captivity is around five years, but can live longer. They come from streams in a tropical climate and prefer water at pH 6–7, a water hardness of up to 15.0 dGH , and an ideal temperature range of 23–27 °C (73–81 °F) .
G. holbrooki has been shown to survive in water with pH and chemical levels known to kill other fish species, and prefers to live in areas where the water flows at a slow pace, is clear and without free-floating plant life, and seeks shelter in rooted plants. No decrease in this species due to human activities has been noted. [10]
The fish will grow up to 4.4 centimetres (1.7 inches) in standard length. It lives in a tropical climate in water with a 6.0–7.5 pH, a water hardness of up to 14 dGH, and a temperature range of 21–25 °C (70–77 °F). It feeds on worms, benthic crustaceans, insects, and plant matter. It lays eggs in dense vegetation and adults do not guard ...
Japanese koi carp are coldwater fish. The term coldwater fish can have different meanings in different contexts.. In the context of fishkeeping, it refers to ornamental fish species that tolerate the temperatures of a typical indoor aquarium well and do not require a heater to remain active, as opposed to tropical fish whom need a heater to survive in the room temperatures of temperate climates;
Warmer temperatures would actually increase their metabolism and shorten their lifespan. [1] For a tropical fish tank, maintaining a warm environmental temperature ranging between 75 and 86 °F (24 to 30 °C) enables different tropical fish to thrive at different temperatures. [2] Aquarium substrate usually consists of sand or gravel.