A-Quarium is a fish tank simulator based on
an A-Life program 'Boids' by Craig Renolds.    
Each fish is modelled individually with a simple
algorithm.
A fish will try to swim with a close neighbour if
it is of the same species, and will try to swim
away if it is of a different species.           
The behaviour of the fish tank is an emergent  
property of all the individual fish actions.   
                                               
The program can be run as a normal 'windows'   
program from program manager or as a screen    
saver by including AQuarium.scr in your windows
folder, then selecting A-Quarium from the choose
screen savers from within the normal windows   
desktop in control panel
                                               
You can change the nature of your fish tank by 
altering the three control variables :         
NUMBER OF FISH minimum of 1 maximum of 60      
NUMBER OF SPECIES minimum of 1 maximum of 5    
FISH TO FISH INTERACTION DISTANCE:             
    this is the maximum distance at which two  
    fish can interact                          
    minimum 1 maximum 300                      
                                               
This is accomplished from the set-up item within
desktop for the screen saver version or the    
set-up item of the options menu of the windows  
program.                                       
                                               
With the windows program, you can also change  
the nature of your fish by selecting           
BALL & STICK drawings or CUTE FISH icons.      
The ball and stick display has the advantage of
more realistic fish movements while the cute   
fish is just plain cute.                       
                                               
This program was written with the fabulous      
Visual Basic.                                  
                                               
If you want the code or just want to comment   
on the program you can contact me at :         
R.Colasanti@Sheffield.ac.uk                    
                                               
Pleasant pisciculture.                         
                                               
Ric Colasanti                                  
              Unit of Comparative Plant Ecology
              University of Sheffield           
              England                          
                                               
              1.1.95