Grunion

July 29th, 2014 No comments
Title:

Grunion




Grunion

Leuresthes tenuis

Grunions are best known for their unusual spawning behavior. These fish spawn, or produce eggs, in the moonlight on spring and summer nights when tides are exceptionally high. Soon after the highest wave of the night, the grunions let a smaller wave carry them onto a sandy beach. Thousands of grunions may come ashore at one time.

The female grunion quickly burrows tailfirst into the wet sand. When the back half of her body is buried, she lays 1,000 to 3,000 tiny pink eggs. The male wraps his body around the upper, exposed part of the female and releases sperm, which seeps down through the sand to fertilize the eggs. The fish then wiggle back to the water and are carried out to sea by the next wave. The entire process takes less than a minute. The eggs remain buried in the sand until 15 days later, when the tides are again exceptionally high. The high waves wash the eggs out of the sand. Within minutes the eggs hatch, and the young grunions are carried out to sea. Grunions are about 1/4 inch long at birth. They grow quickly, reaching about 5 inches when they are a year old. By then they are ready to return to the sandy beach to lay eggs of their own. If grunions are not caught by people or killed by marine predators or disease, they live for about three to four years. People are allowed to catch spawning grunion by hand at certain times of the year.

class: Bony fishes

order: Silversides, flying fishes, and toothed carps

family: Silversides

length: 5 to 7 1/2 inches

diet: small invertebrates

method of reproduction: egg layer

home: coastal waters off California and Baja California

Other:

  • Lake Sturgeon
  • Walking Catfish
  • Oyster Toadfish
Categories: Freshwater Fish Tags: ,

Freshwater Fish Care and Coldwater Aquarium

July 28th, 2014 No comments
Title:

Freshwater Fish Care and Coldwater Aquarium




Freshwater Fish Care and Coldwater Aquarium


Coldwater fishfish – Collective Term (includes Molluscs And Crustaceans) For Any Aquatic Animal That Is Harvested. are starter fish to consider, since coldwater fish are easier than other fish to keep. Coldwater fish are resilient and can adapt better than other fish to waters. Still, cold waterwater – The Great H2o, The Water Is The Basic Ingredient In Your Aquarium. Using Test Kits Will Rate Your Water. fish like any other breathing creature demands oxygenoxygen – All Aquatic Animals, Including Fish And Invertebrates, Need Dissolved Oxygen In Their Water To Survive. So Do The Bacteria That Perform The Crucial Task Of Biological Filtration. Maintaining Adequate Levels Of Oxygen Is Extremely Important And Often Overlooked; You Can Use Test Kits If You Aren't Sure, Or Add An Air Pump.. If the water is dirty, the oxygen supply will diminish. Since, fish produce natural wastes, which include ammoniaammonia (nh3) – Toxic Chemical Byproduct Produced During The Breakdown Of Proteins In Uneaten Fish Food, Decaying Wastes, Or Excreted By Fish Through Natural Metabolic Processes. It Is Converted Into Nitrite And Then Nitrate By Naturally Occuring Beneficial Bacteria In A Process Called The Nitrogen Cycle. build up, the waters will pollute easy. The oxygen is reduced when ammonia build up occurs. With this in mind, you want to add filtrationfiltration – With No Filtration, There Would Be No Aquarium. This Process Removes Waste Materials From Aquarium Water. systems and plants to your take. Plants produce oxygen, and help to remove waste. Filters will perform the same actions, yet through synthetic methods. Therefore, you should add filters, gravelgravel – Basic Bedding For Any Aquariums, Make Sure You Have Enough In Your Tank., and plants to your aquarium before adding your fish. Plants work asas – Algae Scrubber. a nitrogen, which is a colorless gas made up of non-metallic chemicals and its elements produce odorless and colorless gases that are unmoving. In addition, you want to consider stands, lights, hoodhood – Another Word For Wen, The Spongy Headgrowth Seen On Some Goldfish Breeds., and thermometers when purchasing aquariums. As well, the sizesize – The Adult Length Of A Fish In Sl. See Standard Length And Total Length. of your tank is important.

How do I choose the right fish aquarium?

Aquarium size is based on measurements of volume, or units of volume that is equivalent to one cubic decimeter, 1.056 liquid one eighth of a peck. (Quart) The lowest liter capacity recommended is 45, while the best size is above 130 in liter measures. The recommended tanks are the long, wide, and large tanks. The tanks are easy to maintain, as well, you can add a variety of fish without overstepping your boundaries.

How do I choose a stand?

To choose a stand you will need to consider the weight of your aquarium. Will the stand support the aquariums weight, including the additive weight? Will the stand provide the tank a leveled foundation? Is to stand sturdy? Is the stand wide enough? Does the stand attach to walls, or solid surfaces to add additional security?

How do I choose lights?

First, realize that plants feed from light. The downside is that lights will produce higher levels of photosyntheticphotosynthetic – The Process By Which Organisms, Usually Plants, Use The Energy Contained In Light, Usually Sunlight. organisms (Algae), which require more attention from you. As well, brilliant lights will produce higher volumes of heat. Therefore, when deciding how to choose lights, think fish, plants, and algae. Some types of fish detest brilliant lights. Still, we need to think about plants, therefore when choosing lights check out the fluorescent light category. The lights will provide adequate volumes of intensity for plants, as well as a leveled amount of heat for fish.

What is a hood and why do I need one?

A hood is the covering that prevents fish from taking a leap onto your floor. As well, a hood will keep out dirt particles, annoying critters, curious critters, and soso – Significant Other. on. Hoods will also provide shelter for your lights. You should purchase a proper fitting hood for your aquarium to get the most protection.

How do I choose the right thermometer?

A thermometer is an instrument, which is used to measure temperaturetemperature – The Range Of Warmth A Species Can Tolerate, Noted In Both Degrees Celsius And Fahrenheit.. Some thermometers have graduated glass tubes, and bulbs, which contain mercury and/or alcohol. The bulbs or tubes will start to riserise – Bottom Of Low Relief At The Base Of The Continental Slope. when the temperature in a room begins to increase or decrease. The market has a wide selectionselection – A Change In Allele Frequency Over Time In A Population. of thermometers available; therefore, it is recommended that you ask your local pet shop for assistance. Most times, you can get away with the basic thermometer.

In addition to tanks, hoods, lights, plants, etc, you want to purchase gravel, filters, heaters, and so on. It depends on the type of fish you purchase, but you will need to purchase the proper food as well.