Fish-skeleton visualization of bending actuators

2016 ◽  
Author(s):  
Sunjai Nakshatharan ◽  
Andres Punning ◽  
Siim Assi ◽  
Urmas Johanson ◽  
Alvo Aabloo
Keyword(s):  
Fish Skeleton

Research for Fish Motion Model

2012 ◽  
Vol 479-481 ◽  
pp. 1777-1780
Author(s):  
Shu Hong Cheng ◽  
Chun Hai Hu ◽  
Wei Tao Zhang
Keyword(s):  
Water Quality ◽  
Point Of View ◽  
Swimming Velocity ◽  
Motion Model ◽  
Fish Swimming ◽  
Time Dynamic ◽  
Dynamic Motion ◽  
Pollution Research ◽  
State Of Water ◽  
Fish Skeleton

The fish motion essentially reflects the state of water quality, so it is necessary to study the methods of obtaining the real-time dynamic motion characters of fish body in the field of biological monitoring of water quality. From the point of view of the video, to extract the fish skeleton and to establish the motion model. Based on analysis of the motion model, it is easy to acquire some parameters, i. e. , fish swimming velocity and corner, tail dimensionality and so on. The experimental results show that our model can describe fish swimming, which lie a theory foundation for the fish to participate in the environment pollution research.

A new paraclupeid fish (Clupeomorpha, Ellimmichthyiformes) from a muddy marine pro-delta environment: middle Cenomanian Dunvegan Formation, Alberta, Canada

2007 ◽  
Vol 44 (6) ◽  
pp. 775-790 ◽  
Author(s):  
Michael J Hay ◽  
Stephen L Cumbaa ◽  
Alison M Murray ◽  
A Guy Plint
Keyword(s):  
Sea Water ◽  
Marine Species ◽  
The Body ◽  
New Taxon ◽  
Western Interior Seaway ◽  
Sea Floor ◽  
River Outflow ◽  
High Turbidity ◽  
Fish Skeleton ◽  
Limited Oxygen

A black marine mudstone in allomember A of the middle Cenomanian Dunvegan Formation, Alberta, yielded a well-preserved, deep-bodied fish skeleton attributable to a new genus and species, Tycheroichthys dunveganensis, in the Paraclupeidae (Clupeomorpha, Ellimmichthyiformes). This new taxon appears most closely related to members of the subfamily Paraclupeinae, which includes largely freshwater and estuarine or marginal marine species known from South and Central America and China. The Dunvegan Formation represents a large delta complex deposited in the Western Interior Seaway at about 65°N, where mean sea water temperature may have been about 10 °C. The specimen was found about 60 km from the contemporaneous shoreline, and, in life, apparently inhabited a shallow, muddy pro-delta environment characterized by high turbidity and variable salinity. The fish may have died when it was engulfed by brackish floodwater that also introduced suspended mud that rapidly buried the body, preventing physical disarticulation of the skeleton. River outflow probably produced a salinity- and density-stratified water column that limited oxygen transfer to the sea floor, leading to dysaerobic bottom water and an absence of scavengers. High terrestrial phytodetrital content of the sediment also favoured anaerobic conditions that limited bacterial decay.

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