What does MicroFish
calculates maximum-likelihood population estimates, length statistics,
and weight statistics from removal-depletion sampling data.
is provided free of charge
as a service to fisheries professionals and students.
MicroFish software is prohibited.)
All MicroFish 3.0
calculations are performed through the top menu: File, Edit, View, and
Help. Note: some of the MicroFish 3.0 Demonstration Version options are
disabled (available in the MicroFish 3.0 Basic Version only).
form enables the user to view initial maximum-likelihood estimate
results in the field, estimate how many electrofishing removals (passes)
are necessary to achieve a desired confidence range, or perform other
“what if” calculations as desired.
Data view screen:
The first (header)
record in the user’s data set appears in the white text box in the upper
The table of data on
the right is the user’s data as it appears after having been read into
MicroFish 3.0. A table lookup in the next-to-last column identifies the
fish species name. The “Data Check” field on the right scans each
record for errors.
Output Options (in
the gray area on the left) indicate statistics available through
MicroFish 3.0. The results of selecting these options are on the
In this example, the
user’s selection of “Total Catch” changes the Data View into a Results
View. The table at the bottom details the results being displayed
The colors in each
chart correspond to species found in the data set.
In the case of
“population estimate” and “removal pattern” certain cells in the results
table may be flagged to indicate a maximum-likelihood population
estimate was not possible. The reason(s) are indicated by placing the
mouse pointer over the results table.
This summarizes the
capabilities of MicroFish 3.0 Demonstration Version.