Egg-Layer: A method of reproduction in which the female fish lays eggs and the male sprays them with milt (i.e., sperm.) This is the most common method of reproduction; the others are livebearers.
Egg-Layers
As mentioned before, egg- layer fry are often small and require special foods and/or varying degrees of parental care. Do the research.
Egg-Layer
Encyclopedia 1.0 by Rebecca Smallwood
Please visit these sponsors who make FishGeeks possible.
An egg-layer, they spawn in the spring and summertime.
[edit] References ...
These fish are egg-layers but information on specific details are not known.
web hosting - domain names - video sharing
free online games - photo sharing
free blog - short URLs ...
Breeding: All egg-layers, most by scatter method, a breeding tank is often a must.
Good food to get the egg production up in non-herbivorous egg-layers, but carries to many diseases and is too fattening for regular use. >, grindle worms, Grindal worms are good food for small fish and large fry.
The other group is usually egg-layers bass for instance gold striper in addition to fluorescent tetra. This kind of hawaiian species of fish secretes their own eggs as soon as they tend to be fertilized with the guy bass.
The majority of teleost species however are egg-layers, with fertilisation being external (although in some maternal mouth-brooders fertilisation takes place inside the mouth of the female and so therefore may be classed as internal).
Breeding strategies in egg-layers:
Since live bearers nurture their young through the most vulnerable early stages of life, they do not need to reproduce as many offspring as egg-layers.
If the egg-layer is small, so will the mass be, and contain only a few embryos, so may escape casual inspection. The shell is rather football shaped, or a somewhat domed coiled turban.
Uses: Baby brine shrimp are a food of choice for the newly hatched fry of egg-layers and other small fish.
I've never witnesses a spawn of these fishes (I mean geophagines) but it's reported that they do so using a huge variety of breeding habits: mouthbrooders, egg-layers (either in open space or in caves), ...
Marbled Hatchetfish are egg-layers, females are fuller, and will often swell with eggs. Live foods are used to condition a breeding pair. The breeding tank water should have a ph of 6.0. You will need floating plants and peat if possible.
"Liqui-fry for egg-layers" works great, as do micro-worms and vinegar eels. Now the filter may be turned back on (at a low rate). Keep the temperature at 80 degrees F, and leave the lid on the tank as warmth is crucial to the fry developing properly.
All characins are egg-layers and except for the species within the Mimagoniates which have internal fertilization, all use external fertilization.
They are called "livebearers'' (as opposed to "egg-layers'', as all the previously discussed fish have been) because the eggs are fertilized within the female and the fry do not appear until the eggs have hatched.
Most fish kept by aquarists are oviparous (egg-layers), but there are some exceptions - viviparous fish (or livebearers).
If a male and female guppy are housed together, it is very likely they will spawn. Guppies are livebearers, not egg-layers like most fish, and will produce up to 30 fry at a time.
The silver dollar is a peaceful schooling species that spends most of its time in the mid- to upper-level of the water. Its maximum lifespan is more than 10 years. An egg-layer, the adult fish will spawn around 2,000 eggs.
Breeding in an aquarium setting has not been successful yet, however, different methods are being used in the industry. The Tiger Plecostomus is an egg-layer that tends to use plants and rocks as an anchor.
Hemirphamphidae includes fish that are egg-layers and a few that are livebearers. Among the live bearing Half-beaks are the genera Dermogenys, Hemirhamphodon , and Nomorhamphus .
 See also: Fish, Water, Species, Aquarium, Plants
|
