The sperm then goes through her digestive system, then it comes from the anus to fertilize the eggs … My female convicts will stay by their nests and 'fan' the eggs with their fins. … Egg size varies form species to species; the smallest I have measured was from Corydoras pestai at 0.7 mm diameter and the largest from Corydoras 2.8 mm diameter. I just got 7 Corydoras 2 days ago. Laying the last eggs. Once she's finished, very gently, roll your finger over the eggs. I have moved the eggs to a breeder trap but if they are fertilised I will buy a net and then move to my smaller tank when hatched. Factors That Affect the Rate at Which Cory Catfish Lay Eggs. Messages 8,550 Reaction score 553 Location Denver Experience More than 10 years I first thought she had a tumor growing then noticed it was an egg cluster. Cory catfish require a certain temperature to signal that it is time to breed and should be kept in optimal conditions to ensure that they feel comfortable laying eggs. They are a small fish, typically about 2 to 2 1/2 inches in length. Well I was joking around with my daughter cause the biggest SterbaI and the biggest JuliI are attached at the hip. The eggs after laying should have constant water flowing over and between them. Albino Corydoras laying eggs. Member. Gert Combrink. Cory cats will lay eggs in random locations. Gently move the egg to the plastic holding tank remebering not to take the eggs out of water. They will adapt to a varied water chemistry and temperature. But you can make the place where the female will lay eggs brightly lightened. I've had convicts breed like mad. Corydoras eggs - Fertile or Unfertile? Favorite spots include the heater, filters, and the glass, although, occasionally eggs are also laid on plants and driftwood. Methylene Blue is a good medication to put in to prevent this. In the proper conditions, Cory Catfish can lay eggs weekly. I got 2 SterbaI and 5 Julii. 3. My albino corydora catfish keep eating the eggs the male fertilizes, and I want to move them to a new tank. Well this morning I woke up to find eggs placed all over the tank. There is no parental care from the adults. They are the size of my peppered corydoras. The males regroup and start chasing each other and then resume chasing the female. As a rule this is a tank wall or plants with wide leaves. Many owners keep them to take care of uneaten food from the bottom of the aquarium. Now what's throwing me off is that any time I've ever seen Corydoras lay eggs, they have been on the glass and were eaten right away by the other fish, never on something like the piece of drift wood, but there are no other pairs of fish in the tank that would have laid them. Protect the eggs from fungus. I love them all but my peppered one (called Pepsi) is my favourite fish ever. Convicts protect their eggs, I don't think corydora dooo, but I'm sure the same water flow rule applies. During this time, take any pure white eggs out because they are dead. Thread starter AmazonPassion; Start date Dec 29, 2012; Dec 29, 2012. The Albino Cory Catfish (Corydoras aeneus) is a rather hearty species, and are easy to keep. When you see them doing their little dance, especially just after they've gone into the 'T' position, the female will start laying eggs. You will need a tank of 30-40 liters capacity with dim lighting for breeding. To encourage the egg laying, do a large partial water change, my tanks get at least a 50% a week, the change of water does seem to stimulate spawning, if your tank has a lot of plants, hiding places, some eggs may be overlooked by the fish in the tank and manage to hatch. Shortly after that, the pair will spawn again, depositing a few more eggs each time. Joined: Sep 14, 2008 Messages: 1,786 Likes Received: 16 Location: Protea Hights, Brackenfell, Cape Town. 2. Pygmy cory (Corydoras pygmaeus) If you have a nano tank that needs some smaller bottom dwellers, you can’t go wrong with these tiny cory catfish. For these species, providing a spawning mop is a good idea - it gives them somewhere to lay their eggs that is easily removed to a nursery tank. The rate at which Cory catfish lay eggs varies alongside the number of fishes in the group. May 20, 2018 #1 Hi all, I have a community tank and my albino cories have decided to lay eggs. When females are about to lay eggs, they will clear an area of sand to make a nest. I'm very excited because my Corydora just laid her first eggs. They will usually turn white and fuzzy with fungus within a day or so. Corydoras are egg depositors and lay their eggs all over the aquarium. For a six Cory catfish group, it might take every seven days for each female in the group to lay eggs, provided all other conditions are met. I have 4 corydoras: 1 peppered (this is the one who has laid eggs), 1 bronze and 2 albino. Well, there was a total of 9 Corydoras in there in total (of various breeds) - so i'm hoping for plenty of males... not too many eggs though considering the amount of Corydoras in there! During reproduction, the female will lay down her unfertilized eggs and then put her mouth against the genital of the male Corydora. The eggs should hatch within the next six days. After the female has laid her eggs, all of the adult bronze corydoras should be removed from the tank. If none are provided, they may still deposit the eggs on a flat surface in the tank or the aquarium glass itself. This 1-inch (5 cm) catfish has a silvery-gray body with a black horizontal line running down the side. The female will then begin to swallow the sperm from the male. Female albino cory catfish carrying newly fertilized eggs in her pelvic fins: How to Collect Corydoras Eggs If you leave the eggs alone, it’s like a natural form of population control because most of them will get eaten. Cheers!! You can see her … If you would like to breed Delphax Corydoras, then it is recommended that you have a separate breeding tank prepared. Making sure that the water is clean, and the proper pH balance is a necessity for Cory catfish to lay eggs. I have some cory fish and yesterday noticed some eggs on the side of my tank, I am unsure whether I have male or female and am unabe to tell the difference. Spawning can occur several times between several different pairings of the fish, and after it appears that activity has died down in the tank, the adults should be removed. This was not intentional but I am uncertain if they are fertile or not. Development of the eggs tends to vary with temperature of the water with a faster hatching taking place in warmer water and slower hatching happening in cool water. The eggs will then roll over till the sticky side comes into contact with your finger. Congratulations! Otherwise, do many water changes each day to keep the water crystal clean. Guest. If their bellies are round and fat, they may start breeding and laying eggs for you. The size and the quantity of eggs seem to be related, a species laying small eggs produces large numbers and a species producing large eggs only produce small numbers. If you begin to notice your Corydoras engaging in spawning behavior, perform a water change with slightly cooler water. Fish eggs HELP!!!!! After the female finished laying eggs, the other corys started eating them. They are bottom feeders, and they have short whiskers that help them locate food. They'll 'swim' in place to create a slight current over the eggs every now and again. Infertile eggs do not usually last this long. Previously I have used dark green polyester 'wool' for making these mops. Joined May 20, 2018 Messages 5 Reaction score 0. When in the new tank, how would I get them to lay eggs again? Thread starter Rhiannon_98; Start date May 20, 2018; Tags cory catfish corydoras eggs click to enter! Petsmart didn't label them as emerald corydoras. In the wild, Corydoras usually spawn during the rainy season, so you can encourage mating by simulating these conditions. However, they will reduce the growth of algae by consuming scraps in the tank – this reduces the growth of algae. If you condition the female really well, she will lay more eggs, more frequently than if she was being fed less nutritious foods less frequently. And since I had no place to move the corys, none of the eggs survived. Corydoras won’t lay hundreds of eggs, in fact they often lay between 10-15 eggs in one place – usually glass, but they’re able to lay eggs on leaves of plants, even decorations can be a place which they choose for this purpose. Breeding the Delphax Corydoras. Some factors aid the spawning of every fish. Can Corydora catfish lay eggs with no male present? This is affected by several factors and can fluctuate with their environment and the foods that are fed to them. Due to the number of eggs it’s quite difficult to notice their existence, eggs are often eaten by other fish. Put simply, no. :bigsmile: Gerrit, Jun 17, 2010 #1. Images are copyright and may not be reproduced without permission of the copyright holder. My cories were spawning once a week at one point and I also had only one female. Some Corydoras (and many other fish) prefer to place their eggs among moss, roots etc rather than on flat surfaces. The eggs will then be deposited on a flat surface in the aquarium, which may include plants, glass or even the heater. There are many different species of cories. This tank can be undecorated, but a soft substrate is a must, as your Corydoras will prefer to feed by rummaging in the substrate for food and the female will lay her eggs … They live very happily in my 165L aqurium with 2 bristlenosed plecs, 4 platties, 4 zebra danios, 4 rasboras, 4 gouramis and my one remaining male guppy! Mine are coydoras paleatus (peppered cories). She is huge compared to the others. Once they have mated, the female will lay her eggs against the aquarium glass, or among the leaves of the plants in your tank. Some sources suggest one female can lay as many as 50 eggs over the course of a week, but there doesn’t seem to be any official numbers. After depositing a group of eggs closely together, the female rests for a few moments. Watch carefully for a male that stays near the female after she makes a nest. How Often Do Cory Catfish Lay Eggs? The only sad part is it is in a community tank but what an interesting experience it was to see how the whole process works. If however you have the time, room, finances to raise fry, I have added a link to an article to read. I did a quick Monday video since I had my phone handy and noticed new Cory eggs on the glass. I´ll post the videos of the spawning of the firts corys as soon I can. Thread starter #1 AmazonPassion Fishlore VIP. Three or four days is usually about what I expect in water around 72 F., although this can vary according to species. Once fertilized, the female will deposit the eggs at the site it has previously cleaned. This is one of several clutches that I recorded on my phone. Bronze Cory Catfish (Corydoras aenos): ... Later on, when the females lay eggs, it will be much easier to control water quality for the fry without having to move the parent fish to a different tank. The eggs are sticky and will adhere firmly to the nesting site. I also think the species of cory can have an effect on that. Two of my corydora catfish, or green corydoras as petsmart calls them, had eggs. Telling The Difference Between Dwarf Cory Species Corydoras pygmaeus and Corydoras hastatus are the two that seem to gather the most confusion – likely due to their similarly tiny stature. R. Rhiannon_98 New Member. The Aquarium Catfish Website. 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