Monthly Archives: August 2010

Fishing Tips

Fish Breeding Methods For The Crucian Carp

 

Fish farming is carried out at largely in most countries of Asia and Europe. Crucian Carp is one of the freshwater fishes that dwell in the rivers, lakes and reservoirs.  This is a fact sheet provided by the Food and Agriculture Organization of the UN which explains the methods that are adopted for the production of Crucian Carp.

Environmental and biological facts:

Crucian carp are usually sedentary type fishes that naturally propagate in different types of water bodies like lakes, rivers and reservoirs. They are basically omnivores generally feeding on filamentous algae, organic detritus, seeds and pieces of aquatic weeds and small benthic animals. But the larvae or the fry feed usually on zooplankton.

Artificial feed like pelleted feed, by-products from oil extraction and grain processing are also used in aquaculture. The main stimuli for reproduction are water level, rainfall and the temperature changes. The existence of aquatic weeds aids in spawning. They serve as the substrata for the eggs, which are normally adhesive. The average growth rate of a medium sized Crucian Carp is 1.25 kg.

The earthen pond culture is the mainly used system for rearing the Crucian Carp. But even rice paddies are used in countries like China.

Production cycle

 

Production cycle of Crusian Carp 

Criteria for Pond preparation:

There are certain typical aspects for the preparation of the pond for the reproduction and nursing of Crucian Carp and getting them ready for the end of year carp Sale.

Generally earthen ponds of the size of 1.5-2.0 m deep and 0.07-0.2 ha, are used for farming of the Crucian Carp. Before the Crucian carp is introduced in the ponds, the ponds are treated chemically with quicklime to ensure the elimination of all the harmful organisms that hinder in the process of Carp hatchery. The quicklime that is used usually amounts to 900-1125 kg/ha.

Even the organic fertilizers like the green and the animal manure are used for increasing the biomass of the zooplankton that is the natural food organisms for the carp. These are applied 5-10 days prior to stocking. This also depends on the water temperature. The quantity of the organic manures used may be:

4500 kg/ha for green manure.
3000 kg/ha for animal manure.

However, when both are used, their quantity gets reduced.

Supply of seeds:

The major supply of seed for Crucian carp culture is derived from artificial spawning. There are also natural seeds available in various water bodies that aid in carp culture. Carassius carassius gibelio is the commonly cultured carp. This is produced through the method of gynogenesis with the Xingguo red common carp which is the male and the female Carassius carassius gibelio. All female off-springs provided by the assorted gynogenesis, have a growth rate of 30-40 percent, which is higher than that of the original fish. There are also various other strains and species of Crucian Carp cultured in different parts of China.

Hatching process:

Usually matured and well selected brood stock is released into the spawning ponds, cages or tanks. Providing good substrata of palm leaves, plastic weeds, grass bundles and branches of fine trees, is very important in the water column where the spawning is carried on and the egg attachment takes place. Eggs can also be hatched in earthen ponds after treating them chemically. They require the eggs to be moved and fixed in the water column in the ponds along with the substrata.

Eggs hatch better in running water (jar or raceway). The eggs along with the substrata are merely hanged in the water column. The eggs along with the substrata can also be placed in jars or raceways, for hatching. The adhesiveness in the eggs is removed by blending with the clay solution before stocking. Later, the fry or hatchlings are shifted to the nursery ponds when they become capable to feed actively and swim well.

Sometimes hormonal injections are also given for the synchronous spawning of the fishes. Such hormonal injections are optional only. The fishes spawn well even without using them.

 

Nursery stage continued on our blog website

Fish breeding specialise in fish breeding and fish farming. http;//www.fish-breeding.com

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Crappie Fishing Basic Gear

There are some bare essentials that every crappie fisher needs: pole, reel (although truly optional I think you will want one), fishing line and a hook. I hope those are somewhat obvious but let us look at the basics first. Crappie poles are generally long, slender poles reaching lengths of 18 feet or longer. I do not recommend a super long pole for someone that is just getting started or not ready for them. Longer poles have their advantages such as reaching into tight areas and also extending your reach from a central point. This is an advantage when employing a technique called spider fishing, using varying length poles you can create a blanket of hooks, often in a semi-circular pattern.


Longer, and often more slender, poles provide amplified sensitivity as well. Most crappie specific poles would be poor poles for catching catfish or large carp. When choosing a pole consider your application such as how are you planning on casting. Long poles work for just dropping a line in the water but slightly shorter poles will help you when bait casting.


If you have a good idea of what you want for a pole you will now need a reel. There are as many reels to chose from as there are crappies, not really but almost. There are three main components of a reel those are a barrel, crank and a guide or eye. There are two types of spinning reels, an open face and closed, these are easily distinguished. If you can see where the line is stored it is open faced if you cannot it is closed faced. Both types also vary greatly in operation, one you must flip the bail back while holding the line and the other uses a simple push button on the back of the reel which is loosely egg shaped. I like the first one because you can see what is happening with your line and the general feel is better. The later is very popular with kids and the very casual fisher.


There are two more types of reels, a bait caster and the fly reel. The later is not extremely popular with crappie fishers but should not be excluded especially in the spring where fly fishing can be a great weapon in your armory. The first reel has been around in some form for hundreds of years and is very popular with bass fishers and for good reason. Theses reels are easy to recognize as they are the only ones where the axis of the barrel, the part that holds the line, is perpendicular to the pole where all others are parallel to the pole like a spinning reel.


Of course there is an exception with the fly reel but the size of the barrel often gives it away. The bait casting reel gives the user the greatest control over the feed of the line and is also one of the most difficult to master. Simple answer for this is pick a reel you can use and become familiar with all of its various adjustments as I’m sure there will be many such as brakes and clutches.

Dan Eggertsen is a fishing researcher and enthusiast who is committed to providing the best crappie fishing information possible. Get more information on basic crappie fishing gear here: http://www.askcrappiefishing.com

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