But recently a study (find) that a kind of fish called African cichlids can remember events from as long as 12 days ago.相关知识点: 试题来源: 解析 [答案]has found [解析]考查动词时态。最近一项研究发现,一种名叫非洲鲷鱼的鱼甚至能记得12天前发生的事。根据recently可知,应使用现在完成时,表示“...
These frogs spend most of their time at the bottom surface of thefish tank. They are nocturnal creatures. They sleep during the day and remain active at night. However, beginner aqua owners often wonder,“how do African dwarf frogs sleep?” and “do African dwarf frogs sleep with their eye...
Fossil records show fish have existed for more than 500 million years which makes them very old on the evolutionary scale. There are more than 1300 species of cichlids and many are popular aquarium fish. They are primarily freshwater fish and the majority of species are African, appearing in g...
researchers trained a kind of fish calledAfrican cichlids to go to a certain area of their tank to getfood.2.And then they put them back in the tankagain.It was surprising that after such a long break the fishstill went to the same place to get food.3.An earlier study showed that ...
Bettas should not be kept with aggressive tank mates such asCichlidsor with fish that can nip their long fins such asDanios,TetrasorBarbs. Diet[edit] Carnivore. In the wild, diet is insects and insect larvae. As aquarium pets, their main diet should consist of specially formulated Betta pel...
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 ...
j.Oscars– Big heavy cichlids from South America; fast-growing messy carnivores that churn out a lot of waste. Get something like 10-14 inches long. I saw a post from someone it works for, but another poster said one attacked his turtles (they can grab the legs, etc…). Will compete...