Many barbel and tetra species can be socialized with each other without any problems. In specific cases, it must be noted that barbels are generally curious and lively and like to tug at everything, including the caudal fins of other…
She didn’t have a single father, quite the contrary: she was developed simultaneously by several inventors. The first steps were taken at the end of the 19th century, when it was discovered that the ability of a chemical element, selenium,…
Does UV light help against algae? The radiation from a UV clarifier also kills algae spores. Since algae release a large number of spores, a UV emitter can only ever reach and kill some of these spores. A UV clarifier…
»> The phenomenon is caused by an electrical discharge between two clouds (which is more common) or between a cloud and the ground. These clouds are usually of the cumulonimbus type – vertically more extensive, with a smooth underside. They…
Almost all aquarium fish can make sounds. They do this for a variety of reasons: Cichlids, among other things, during courtship and aggressive behavior catfish for defence Tetra possibly for shoal cohesion Loaches for unknown reasons An inexpensive mono microphone…
ILLUSTRATES Estevan Silveira 1) Bad influence The theory that we all have at least one “twin” out there has many origins. Most go back to German culture – where the term doppelganger (meaning “walking double”) appeared. It was first used…
What is total hardness? MarcelBM / Pixabay As water seeps into the ground, it absorbs minerals and salts. Salts consist of 2 so-called ions. In table salt, these two ions are sodium and chloride.The most important salts in water are…
READER QUESTION Robson Arcanjo Martins, Dom Joaquim, MG – (Steve Evans/Wikimedia Commons) UNISEX SYMBOLISMdraw a paint between the eyes is a simple way for someone to demonstrate that they follow Hinduism. That is, the sign is not restricted to women…
Data sheet masks Apistogramma Latin name: Apistogramma Paulmuelleri Trade name: Mask Apistograma order name: Cichliformes (Cichlids) Family: Cichlidae (Cichlids) Genus: apistograma Origin: Puerto Maldonado, Peru Size (in cm: Males 6 cm, females 4 cm Characteristics: adaptable, easy breeding aquarium size…
From the bacon frya layer of leather, meat and a lot of fat, usually removed from the pork belly. It’s the excess fat that makes the snack tasty. According to the chef Samara Grossiideally this layer should have at least…