Do fish take care of their offspring? How does this process happen, and what is the peculiarity of such care?
Initially, reports of lazy observers that fish are no worse than land birds can build whole nests, as well as vigilantly guard their cubs, were met by their scientists and titled listeners with a great deal of mistrust. Nowadays, scientists know for certain that a very diverse behavior has developed in the course of evolution in fish. This diversity also affected the issues of raising offspring. The vast majority of fish, of course, care little about their children. Their caviar is simply swept out into the water, where most of the fry simply die. True, in order to ensure the conservation of the species, nature gave such fish the opportunity to reproduce a huge amount of caviar.
There is a plus in this vulnerability of fish: in this way, nature does not allow any one species of fish to prevail over the rest, providing a variety of species. Moreover, in the event that some specific fish begin to very actively reproduce their own kind, the increase in the amount of feed increases the number of predatory fish that feed on just such a fish. The balance remains. By the way, when this species of predators fulfills its intended function, it also dies out, since it has nothing more to feed on.Apistogram.
In general, we can observe a similar picture among all types of living things, both on land and in water.
But what about those fish that take care of their babies very actively? Again, you can talk here not only about fish. This law applies to all living things: the most well-organized parents, as a rule, have very few offspring. The explanation is quite simple: the more carefully adult fish look after the babies, the greater the chance these children have to live to old age.
How do fish take care of their cubs?Apistograms are one of the most caring parents.
Caring manifests itself in various ways and is not always clear. It would seem, why does a Brazilian fish Nanostomus lay eggs on the leaves of plants? And you take a closer look at how carefully fish are chosen, on which bush to lay eggs! Preference is given to bushes without fail with dense foliage. The small fish foresees that the fry need a safe place to hide.
Somik corridor also chooses a masonry place for a long time. Before identifying eggs in the right place, they are worn in folded fins. Having finally decided on a place, caviar is firmly glued there with special glue. Caviar can be anywhere: on stones, and on plants, and even on the lid of the aquarium!Apistograms carefully prepare a nest for their offspring.
If the mother is engaged in the placement of eggs at the corridor, then at the dwarf cichlid these responsibilities are assigned to the father. He not only chooses a place, but also creates all conditions for caviar so that good healthy fry come out of it. But, I must say that the maximum number of hatchlings is hatched with such care.
By the way, the fact that it is the father who takes care of the growing offspring is not uncommon in fish. For example, in Malay gobies, the female is not even allowed to caviar: usually the nests are arranged closed for penetration from the outside.
Not always there is suitable material for the device jack. Therefore, many fish amaze us with their adaptability to exits from seemingly hopeless situations.Fish of the genus corridor.
Surprisingly, the nest can even be made from the air! So do some fighting fish. The device is usually occupied by the father father. With air collected from the surface of the water, it fills the bubbles of saliva, forming from them a whole foamy nest. In this nest and eggs mature in due time. Until the fry grow enough to search for food for themselves, the father is inseparably near the nest, supporting him in a condition suitable for life. I must say that in such an unusual nest, living conditions are very, very comfortable: a lot of light, of course - air, warm, but not excessively hot.
Material for an unusual nest can be not only air, but also ... oil. Male gourami emits a special oily liquid. It is visible as a spot on the surface of the water. This oil is very sticky and helps to collect caviar in one place, it does not carry away by the current or waves.Trophyus is another caring parent.
It is very interesting to observe the development of tiny fish in such a nest. Freshly hatched larvae lie with their belly up. Bacteria, for which an oily liquid is the most favorable environment, serve as food for ciliates - unicellular organisms. The fry, in turn, eat the ciliates, gaining energy for further maturation. When they grow up, they turn downside down and leave their cozy nest.
A small fish apistogram makes great efforts to arrange a place to place its caviar. They prefer to nest on a stone, but the stone should be absolutely, perfectly clean! That is, in the literal sense of the word: the fish-parents remove everything, absolutely all grains of sand, specks, the smallest garbage from it. Cleanliness is just surgical, but, unfortunately, this does not add safety to future offspring: a nest in an open place is very vulnerable to predators - fans of alien caviar. Therefore, apistograms are often tricky, placing the eggs not on the stone, but under it. That's just to look after the offspring in this case have upside down. But the apistogram is a persistent fish, one might say heroic. One has only to look at how these babies are trying to protect their cubs bred in the open. They do not scare even large fish.Trophy. What fish tricks do not go to protect their offspring.
Many fish nest in small caves, stone crevices, which is really very convenient and safe. But if you keep such fish near the aquarium, then such a problem is possible: even if you offer your pets a comfortable mug or pot for laying eggs, they will not be interested in them and, moreover, refuse to breed! What is the secret? Nature conceived in such a way that only a joint overcoming of difficulties unites the fish family and spurs the reproduction process. This happens even on an organic level! Caviar will not mature and cannot be delayed if parents do not need to make efforts to equip their nest: cleaning it of sand and debris, laying a more convenient entrance, etc. This is not just a formality, but a necessary ritual to spawn took place.
As for the most unusual incubators for future offspring, the African trophies here went the farthest. They carry their offspring in the mouth. It is simple, and most importantly, as safe as possible. But then, therefore, they produce no more than a dozen eggs - with this method of saving cubs, all fry survive.
An even safer way is to lay one single egg in a clam shell. But he demands from future parents supersonic speed: finding an open mollusk and having time to complete the breeding process before the shell flaps have closed is very difficult. But the game is worth the candle. If everything goes well, the future little fish will not face anything.