Fish Histopathology

Postgraduate course

Course description

Objectives and Content

The aim of the course is to give an introduction to fish histology, both in normal and diseased fish, with an emphasis on Norwegian farmed fish. The course is divided into two parts, where the first part deals with the normal (non-pathological) histology. Here, the morphology and structure of all tissue types and important organs will be reviewed. In the second part we will give an introduction to how damaged tissue and pathological changes look microscopic. We will first give an introduction to general histopathology and lesions in various organs of fish. Then we will go through what this specifically looks like in some current diseases in farmed fish, with the main emphasis on Norwegian conditions.

Learning Outcomes

After completing the course, students should be able to identify all tissue types, and must be able to recognize all important organs and describe its structure based on microscopic sections in normal fish. In the pathology part, the student must be able to describe general histopathological changes and be able to give an histopathologically based diagnosis for current diseases. The student must be able to distinguish between the histology of healthy and diseased tissue, as well as between tissue damage that occurs due to disease, and which results from poor preparation (artifacts).

ECTS Credits


Level of Study

Master/phd level

Semester of Instruction


This course has a limited capacity, enrolment is based on application. The application deadline is Wednesday in week 33 for the autumn semester. Please see this page for more information. You will receive confirmation of whether you received a seat in Studentweb no later than Monday the week after the deadline.

It is compulsory to attend the first lecture/orientation meeting, or you risk losing your seat. If you are unable to attend the first lecture, you must contact the Study Section ( The time of the first lecture/orientation meeting can be found in the schedule on the course website or on Mitt UiB.

Place of Instruction

Required Previous Knowledge
Recommended Previous Knowledge
Bachelor in biology, BIO280 and BIO291, or equivalent
Credit Reduction due to Course Overlap
BZL354: 10 ECTS
Teaching and learning methods
The subject is taught in a microscopic course room, where a number of sections will be microscopically screened, and scans of sections will be viewed digitally. These must be illustrated in a journal. At the end of the course, we will solve and present cases from the aquaculture industry.
Compulsory Assignments and Attendance
Lectures and laboratory course
Forms of Assessment
Oral examination
Grading Scale
The grading scale used is A to F. Grade A is the highest passing grade in the grading scale, grade F is a fail.
Reading List
The reading list will be available within June 1st for the autumn semester and December 1st for the spring semester.
Course Evaluation
Students will evaluate the course in accordance with the quality assurance system at UiB and the Department. You can find courseevaluations in the Quality Assurance Reports.
Examination Support Material
Programme Committee
The Programme Committee is responsible for the content, structure and quality of the study programme and courses.
Course Administrator
The Faculty of Mathematics and Natural Sciences - Department of Biological Sciences has the administrative responsibility for the course and program.