#' @title Catch and effort data for Fantail Darter.
#'
#' @description Catch and effort data for Fantail Darter (\emph{Etheostoma flabellare}) from seven removal events conducted by Mahon (1980).
#'
#' @details Catch (number of fish) was recorded. Effort was a constant amount of electrofishing for each sampling event and is, thus, entered as a constant value of 1.
#'
#' These data are used in many publications because the stream section was rotenoned following the removal surveys to determine a known population size of 1151 individuals.
#'
#' @name DarterMahon
#'
#' @docType data
#'
#' @format A data frame with 7 observations on the following 2 variables.
#' \describe{
#' \item{catch}{Catch of Fantail Darter.}
#' \item{effort}{Constant electrofishing effort.}
#' }
#'
#' @section Topic(s):
#' \itemize{
#' \item Population size
#' \item Abundance
#' \item Depletion methods
#' \item Leslie method
#' \item DeLury method
#' \item Catchability
#' }
#'
#' @concept Abundance
#' @concept Population Size
#' @concept Leslie
#' @concept DeLury
#' @concept Depletion
#' @concept Catchability
#'
#' @source From Mahon, R. 1980. Accuracy of catch-effort methods for estimating fish density and biomass in streams. Environmental Biology of Fishes. 4:343-363. \href{https://raw.githubusercontent.com/fishR-Core-Team/FSAdata/main/data-raw/DarterMahon.csv}{CSV file}
#'
#' @keywords datasets
#'
#' @examples
#' data(DarterMahon)
#' str(DarterMahon)
#' head(DarterMahon)
#'
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