Identification in Biology

Labeo Rohita Classification

Identification in biology is known as the process of assigning a pre-existing taxon name to a specific individual organism. Identification of the organisms to individual scientific names or even codes can be based on the individualistic natural body features, some experimentally created individual markers, for example, the colour dot patterns, or even on the natural individualistic molecular markers that are similar to the ones that are used in the maternity or paternity identification tests. Individual identification has its use in ecology, wildlife management and conservation biology. The more common form of the identification is the identification of the organisms to their common names, for example, the lion or its scientific name which is Panthera leo. By necessity, this is dependent on the inherited features or characters of the sexual organisms, the inheritance which is forming the basis of defining a specific class. The features can be either morphological, or anatomical, or physiological, behavioural, or even molecular. In this article, we will study about the identification in biology, the labeo rohita classification, and the specimen of leech.


Let us first understand what is taxonomy in biology.

Taxonomy is defined as the methodology and the principles of the systematic botany and zoology that sets up different arrangements of the kinds of plants and animals according to their hierarchies of the superior and the subordinate groups. Among all the biologists, the Linnaean system of the binomial nomenclature, which was created by a Swedish naturalist whose name was Carolus Linnaeus in the early 1750s, is accepted internationally.

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Guidelines and Principles for Nomenclature

Now that you know about what is taxonomy, let us take a look at what is nomenclature and how the animals and plants are named.

  1. The name should be in Latin or must have been derived from Latin.

  2. It must be written in the italics when it is typed and must be underlined when it is handwritten.

  3. It consists of two parts, the first word is the genus and the second word is species.

  4. The genus name starts with a capital letter whereas the species name starts with lowercase letters.

  5. The name should be short, precise and must be easy to pronounce.

  6. The name of the author must be written in an abbreviated form after the name of the species. For example, Mangifera indica Linn.

Labeo Classification

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Let us learn about the labeo rohita spotting in detail.

Domain - Eukaryota

Kingdom - Metazoa

Phylum - Chordata

Subphylum - Vertebrata

Class - Actinopterygii

Order - Cypriniformes

Family - Cyprinidae

Genus - Labeo

Species - Labeo rohita

Labeo Rohita Comments

  1. It is a type of freshwater bony fish which is found in the rivers and ponds. 

  2. It makes for a source of food for many living organisms.

  3. The body of the rohu fish is compressed, fusiform and it matures up to 1m in length. The body is distinguished into different parts that are the head, trunk, and tail. It is covered by a large overlapping and cycloid scales

  4. The head is depressed and forms a blunt snout. The fish also possesses a subterminal fringe lipped mouth without any teeth, a pair of eyes and two nostrils

  5. There are four pairs of gill slits located on the lateral side of the body and behind the eyes. The gill slits are known to be covered by an operculum. The lateral line is distinct and clear.

  6. The trunk consists of the pair of pectoral fins, a dorsal fin, one ventral or an anal fin and one homocercal caudal fin.

Specimen of Leech

Let us now look at the specimen of the leech.

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Kingdom - Animalia

Phylum - Annelida

Class - Hirudinaria

Order - Gnathobdellida

Genus - Hirudinaria

Species - Granulosa

Features of Leech

  1. It is found in the freshwaters such as the ponds and sluggish streams

  2. It is commonly known as an Indian cattle leech.

  3. It is a type of a temporary ectoparasite which feeds on the cattle and blood

  4. The body of a leech is elongated, dorsoventrally flattened and is metamerically segmented. The leech body has 33 different segments.

  5. The anterior end contains an anterior sucker that is cup-shaped and is turned downwards and ventral, in which the mouth is centrally situated. The posterior end consists of a posterior sucker that is circular and is highly muscular. It is formed because of the fusion of the last 7 segments.

  6. The leech exhibits powerful organ attachments as well as locomotion

  7. The anus of the leech is located dorsally at the base of the posterior sucker

  8. There are five different pairs of small eyes that situated at the first five segments dorsally

  9. Leech is known to be bisexual

FAQ (Frequently Asked Questions)

1. What is a Specimen in Biology?

Ans. A biological specimen which is also called a biospecimen refers to a biological laboratory specimen which is held by a biorepository and is used for research. Such a kind of specimen would be taken with the help of sampling so that it can be a representative of any other specimen which is taken from the source of that specimen. When the biological specimens are stored, they ideally remain equivalent to the freshly-collected specimens for the purposes of different kinds of research.

The human biological specimens are stored in the type of biorepository known as a biobank, and the science of preserving these biological specimens is the most active when it comes to the field of biobanking.

2. Why is it important to collect a Biological Specimen?

Ans. Biological collections or specimens are systematized repositories which are well identified, classified and ordered off a combination of any kind of biological material. Most of these repositories are deposited not only in the natural history or any kind of science museums but also in the universities, research centres or even totally or partially in the private collections.

These are then used by the researchers to research them.