You can find the following information:
On the top, you see the year and below the amount of “BREEDING PAIRS” (=ZP) for each species/form that has ever been reported. I alays looked at the number of adult animals and took the lower number (if report was 5male, 3female, I counted this as 3 Breeding Pairs) So if of one species/form there had only been 50 females reported, I did not count them nor did I count undeterminde or juvenile animals.
I decided to do it that way because it does not make sense to count animals that are either not able to reproduce or not fully grown. I wanted to get a comarable number that has a sort of an impact. Theoretically, with each of these pairs we could set up a tank that should be able to produce offspring. This means that breading pair has the potential to keep its species alife which is not given in single animals or monosex groups.
I tried to keep as close to the descriptions and differenciations of forms given in the census reports. The “ct” at the end of a species name indicates “commertial trade or commertial import”.
At the bottom end of the file, you find special and concluded information for each year. The “total ZP” indicates the total amount of breeding pairs reported per year. The second row is the amount of Species/forms that were reported. The next and probably pretty important number is the ratio (total pairs)/(species reportet) It gives the average number of breeding pairs per species that were present. The last (uncomplete) row shows the number of participants.
The coloration of the numbers in the table indicates the “safety” of a present “population”. I would consider anything below 6(red) breeding pairs of one form/species als rather endangered. If there are more than 20 pairs(dark green), we can be pretty sure that the species can be kept alife for quite some time. It should be rather unexpectable that these species will vanish within a short time.