Past research has shown that many animals, including fish, can tell the difference between larger and smaller numbers. For example, mosquitofish (食蚊鱼) prefer to join the largest possible social group and will choose a group of four over a group of three. Cichlids and stingrays can see a...
根据文章第四段、第五段 "In the study, researchers from MacEwan University in Canada trained a kind of fish called African cichlids…They then waited for 12 days before putting them back in the tank again.…… They found that after such a long break the fish still went to the same place...
They found that after such a long break the fish still went to the same place where they first got food. This suggested that they could remember their past experiences. In fact, scientists had been thinking for a long time that African cichlids might have a good memory. An earlier study ...
根据第二段This fact has been known for some time that Cichlids and stingrays can precisely detect small quantities without counting.(一段时间以来,人们就知道慈鲷和黄貂鱼可以精确地检测到少量而不需要计数。)可知,在进行研究之前人们早就知道慈鲷和黄貂鱼不需要数就能精确地识别较小...
Make sure that your discus fish is getting enough food when they are kept in the same tank with other fish, particularly the angelfish. One common factor that you should not miss out about these two types of fish is that they are both cichlids. As usual, cichlids have that reserved reputa...
根据文章中的第二段的第二句:In the study, researchers from MacEwan University in Canada trained(训练)a kind of fish called African cichlids to go to a place of their fishbowl(鱼缸)to get food. 可知在这项研究中,研究人员让一种叫非洲慈鲷的鱼到鱼缸的某个地方去觅食,故①正确;根据文章中的第...
They took the fish out and then waited for 12 days before putting them back in the tank again. They found that after such a long break the fish still went to the same place where they first got food.In fact, scientists had been thinking for a long time that African cichlids might ...
fish with good memories can live more safely in the wild C . fish can only remember places with food D . African cichlids have better memories than any other kind of fish (4) The passage is mainly to . A . discuss the intelligence of certain fish B . introduce different kinds of ...
In fact, scientists had been thinking for a long time that African cichlids might have a good memory. An earlier study showed that they behaved aggressively (攻击性地) in front of certain fish, perhaps because they remembered their past fights. But until the latest findings, there was no cle...
with freshwater snails. Nerite Snails, Mystery Snails, Gold Inca Snails, Ivory Snails, Ramshorn Snails, Rabbit Snails and Japanese Trapdoor Snails good. Whisker Shrimp can be aggressive with other small species of shrimp and small fish. But they are no match for roughens like Cichlids or ...