I have a pair of Marlboro Red which pair up for than 3 months. Every time when their eggs hatched and the fry became free swimming both of the parents (male & female) will eat back their fry and on the next day the female fish will lay eggs again.
Can you help to advise how to prevent them from eating back their fry? Up to now already 5th time they eat back the fry. Thank you for your advise in advance.
Change the pair. Let them pair up with another male or female.
Do not disturb them. Apply Methylene Blue after spawning.