diff --git a/Projet.iml b/Projet.iml
new file mode 100644
index 0000000..c90834f
--- /dev/null
+++ b/Projet.iml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/src/ecoparasite/input/DataParsing.java b/src/ecoparasite/input/DataParsing.java
new file mode 100644
index 0000000..11847ce
--- /dev/null
+++ b/src/ecoparasite/input/DataParsing.java
@@ -0,0 +1,10 @@
+package ecoparasite.input;
+
+import ecoparasite.poisson.Poisson;
+
+import java.util.HashSet;
+
+public interface DataParsing {
+
+    public HashSet<Poisson> parse(RawData data);
+}
diff --git a/src/ecoparasite/input/RawData.java b/src/ecoparasite/input/RawData.java
new file mode 100644
index 0000000..3755299
--- /dev/null
+++ b/src/ecoparasite/input/RawData.java
@@ -0,0 +1,4 @@
+package ecoparasite.input;
+
+public class RawData {
+}
diff --git a/src/ecoparasite/poisson/Mackerel.java b/src/ecoparasite/poisson/Mackerel.java
new file mode 100644
index 0000000..d3f442c
--- /dev/null
+++ b/src/ecoparasite/poisson/Mackerel.java
@@ -0,0 +1,22 @@
+package ecoparasite.poisson;
+
+import ecoparasite.input.DataParsing;
+import ecoparasite.input.RawData;
+
+import java.util.HashSet;
+
+public class Mackerel extends Poisson implements DataParsing {
+    public Mackerel(String species, Double length, Double infestation) {
+        super(species, length, null, infestation);
+    }
+
+    @Override
+    public HashSet<Poisson> parse(RawData data) {
+
+        HashSet<Poisson> fishSet;
+        fishSet = new HashSet<>();
+
+
+        return fishSet;
+    }
+}
diff --git a/src/ecoparasite/poisson/Merlu.java b/src/ecoparasite/poisson/Merlu.java
new file mode 100644
index 0000000..e1fec75
--- /dev/null
+++ b/src/ecoparasite/poisson/Merlu.java
@@ -0,0 +1,22 @@
+package ecoparasite.poisson;
+
+import ecoparasite.input.DataParsing;
+import ecoparasite.input.RawData;
+
+import java.util.HashSet;
+
+public class Merlu extends Poisson implements DataParsing {
+    public Merlu(String species, Double length, Double infestation) {
+        super(species, length, null, infestation);
+    }
+
+    @Override
+    public HashSet<Poisson> parse(RawData data) {
+
+        HashSet<Poisson> fishSet;
+        fishSet = new HashSet<>();
+
+
+        return fishSet;
+    }
+}
diff --git a/src/ecoparasite/poisson/PartiePoisson.java b/src/ecoparasite/poisson/PartiePoisson.java
new file mode 100644
index 0000000..63d1a1c
--- /dev/null
+++ b/src/ecoparasite/poisson/PartiePoisson.java
@@ -0,0 +1,4 @@
+package ecoparasite.poisson;
+
+public abstract class PartiePoisson {
+}
diff --git a/src/ecoparasite/poisson/Poisson.java b/src/ecoparasite/poisson/Poisson.java
new file mode 100644
index 0000000..3fbc49f
--- /dev/null
+++ b/src/ecoparasite/poisson/Poisson.java
@@ -0,0 +1,41 @@
+package ecoparasite.poisson;
+
+import java.util.HashSet;
+
+public class Poisson{
+
+    private String specie;
+    private Double length;
+    private Double weight;
+    private Double infestation;
+    protected HashSet<PartiePoisson> fishParts;
+
+    public Poisson(String specie, Double length, Double weight, Double infestation){
+        this.specie = specie;
+        this.length = length;
+        this.weight = weight;
+        this.infestation = infestation;
+    }
+
+
+    public String getSpecie() {
+        return specie;
+    }
+
+    public Double getLength() {
+        return length;
+    }
+
+    public Double getWeight() {
+        return weight;
+    }
+
+    public Double getInfestation() {
+        return infestation;
+    }
+
+    @Override
+    public String toString(){
+        return "";
+    }
+}