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. My cories were spawning once a week at one point and I also had only one female. 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. They'll 'swim' in place to create a slight current over the eggs every now and again. I also think the species of cory can have an effect on that. The Aquarium Catfish Website. 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 eggs are sticky and will adhere firmly to the nesting site. Protect the eggs from fungus. Making sure that the water is clean, and the proper pH balance is a necessity for Cory catfish to lay eggs. They are one of the easier corydoras to breed. After the female finished laying eggs, the other corys started eating them. Some Corydoras (and many other fish) prefer to place their eggs among moss, roots etc rather than on flat surfaces. This is affected by several factors and can fluctuate with their environment and the foods that are fed to them. Well this morning I woke up to find eggs placed all over the tank. Some factors aid the spawning of every fish. Due to the number of eggs it’s quite difficult to notice their existence, eggs are often eaten by other fish. They are bottom feeders, and they have short whiskers that help them locate food. The sperm then goes through her digestive system, then it comes from the anus to fertilize the eggs … During reproduction, the female will lay down her unfertilized eggs and then put her mouth against the genital of the male Corydora. 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. Watch carefully for a male that stays near the female after she makes a nest. 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. The eggs should hatch within the next six days. I love them all but my peppered one (called Pepsi) is my favourite fish ever. They are a small fish, typically about 2 to 2 1/2 inches in length. 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. Convicts protect their eggs, I don't think corydora dooo, but I'm sure the same water flow rule applies. The eggs after laying should have constant water flowing over and between them. Joined May 20, 2018 Messages 5 Reaction score 0. Images are copyright and may not be reproduced without permission of the copyright holder. When females are about to lay eggs, they will clear an area of sand to make a nest. I did a quick Monday video since I had my phone handy and noticed new Cory eggs on the glass. Thread starter Rhiannon_98; Start date May 20, 2018; Tags cory catfish corydoras eggs click to enter! If none are provided, they may still deposit the eggs on a flat surface in the tank or the aquarium glass itself. Member. The rate at which Cory catfish lay eggs varies alongside the number of fishes in the group. However, they will reduce the growth of algae by consuming scraps in the tank – this reduces the growth of algae. 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. Many owners keep them to take care of uneaten food from the bottom of the aquarium. Put simply, no. If you begin to notice your Corydoras engaging in spawning behavior, perform a water change with slightly cooler water. Gently move the egg to the plastic holding tank remebering not to take the eggs out of water. … Corydoras eggs - Fertile or Unfertile? The males regroup and start chasing each other and then resume chasing the female. Petsmart didn't label them as emerald corydoras. 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. As a rule this is a tank wall or plants with wide leaves. Do Cory Catfish Eat Algae? 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 … When you see them doing their little dance, especially just after they've gone into the 'T' position, the female will start laying eggs. I got 2 SterbaI and 5 Julii. Tank water parameters for spawning should be the following: temperature 20 – 26°C, hardness 4-15°, pH 6.0-7.2. You will need a tank of 30-40 liters capacity with dim lighting for breeding. I have 4 corydoras: 1 peppered (this is the one who has laid eggs), 1 bronze and 2 albino. 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. The Albino Cory Catfish (Corydoras aeneus) is a rather hearty species, and are easy to keep. After the parents are gone, the eggs risk dying of fungus. Laying the last eggs. After the female has laid her eggs, all of the adult bronze corydoras should be removed from the tank. :bigsmile: Gerrit, Jun 17, 2010 #1. Once they have mated, the female will lay her eggs against the aquarium glass, or among the leaves of the plants in your tank. 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. If you would like to breed Delphax Corydoras, then it is recommended that you have a separate breeding tank prepared. Cheers!! My female convicts will stay by their nests and 'fan' the eggs with their fins. They lay adhesive eggs, normally on the glass wall of the aquarium, which sticks there until they hatch and then drop to the bottom of the aquarium. You can see her … Well I was joking around with my daughter cause the biggest SterbaI and the biggest JuliI are attached at the hip. Shortly after that, the pair will spawn again, depositing a few more eggs each time. Guest. There is no parental care from the adults. 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. And since I had no place to move the corys, none of the eggs survived. Gert Combrink. Fish eggs HELP!!!!! They will adapt to a varied water chemistry and temperature. 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. I've had convicts breed like mad. Cory cats will lay eggs in random locations. This was not intentional but I am uncertain if they are fertile or not. Favorite spots include the heater, filters, and the glass, although, occasionally eggs are also laid on plants and driftwood. If however you have the time, room, finances to raise fry, I have added a link to an article to read. In the wild, Corydoras usually spawn during the rainy season, so you can encourage mating by simulating these conditions. Factors That Affect the Rate at Which Cory Catfish Lay Eggs. I'm very excited because my Corydora just laid her first eggs. This 1-inch (5 cm) catfish has a silvery-gray body with a black horizontal line running down the side. After depositing a group of eggs closely together, the female rests for a few moments. Once she's finished, very gently, roll your finger over the eggs. I´ll post the videos of the spawning of the firts corys as soon I can. She is huge compared to the others. 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. Three or four days is usually about what I expect in water around 72 F., although this can vary according to species. 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. 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! Two of my corydora catfish, or green corydoras as petsmart calls them, had eggs. 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. 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. Joined: Sep 14, 2008 Messages: 1,786 Likes Received: 16 Location: Protea Hights, Brackenfell, Cape Town. Once fertilized, the female will deposit the eggs at the site it has previously cleaned. When in the new tank, how would I get them to lay eggs again? The female will then begin to swallow the sperm from the male. During this time, take any pure white eggs out because they are dead. 2. 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. The eggs will then roll over till the sticky side comes into contact with your finger. But you can make the place where the female will lay eggs brightly lightened. Corydoras are egg depositors and lay their eggs all over the aquarium. R. Rhiannon_98 New Member. Otherwise, do many water changes each day to keep the water crystal clean. Albino Corydoras laying eggs. This is one of several clutches that I recorded on my phone. 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. There are many different species of cories. Thread starter AmazonPassion; Start date Dec 29, 2012; Dec 29, 2012. How Often Do Cory Catfish Lay Eggs? My albino corydora catfish keep eating the eggs the male fertilizes, and I want to move them to a new tank. Mine are coydoras paleatus (peppered cories). 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. They will usually turn white and fuzzy with fungus within a day or so. Infertile eggs do not usually last this long. Breeding the Delphax Corydoras. 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! Congratulations! In the proper conditions, Cory Catfish can lay eggs weekly. 3. May 20, 2018 #1 Hi all, I have a community tank and my albino cories have decided to lay eggs. I just got 7 Corydoras 2 days ago. If their bellies are round and fat, they may start breeding and laying eggs for you. The eggs will then be deposited on a flat surface in the aquarium, which may include plants, glass or even the heater. They are the size of my peppered corydoras. Thread starter #1 AmazonPassion Fishlore VIP. 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. Previously I have used dark green polyester 'wool' for making these mops. Methylene Blue is a good medication to put in to prevent this. 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